775,678 Matching Results

Search Results

Results: 1 - 24 next

Telephone-Transmitter.

Description: Patent for a telephone-transmitter "with a diaphragm and carbon button carried thereby, of a spring-supported flaring conical carbon-cell provided with a flange covered with soft material and resting on the carbon button carried by the diaphragm, the carbon-cell being filled with granulated carbon resting in contact with the carbon button" (lines 13-19). This is meant to optimize the volume of sound being transmitted.
Date: October 20, 1896
Creator: Alexander, Horace C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Telephone-Transmitter.

Description: Patent for a granulated-electrode phone transmitter that is designed to be simple and "constructed so that the granulated-electrode cannot become displaced from the cell" (lines 10-12).
Date: May 11, 1897
Creator: Alexander, Horace C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Telephone-Transmitter.

Description: Patent for "a simple transmitter in which the greatest volume of sound may be transmitted without causing grating or rattling." (Lines 8-11) Includes instructions and illustrations.
Date: June 15, 1897
Creator: Alexander, Horace C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Wireless-Telephone System.

Description: Patent for a wireless telephone system that does not require the user to flip a switch in between receiving and sending a message.
Date: June 27, 1911
Creator: Johnson, Maurice Bernays
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Telephone-Lighting System.

Description: Patent for an invention as specified relates to new and useful improvements in telephone lighting systems for the purpose of providing lamps on subscribers' telephones arranged.
Date: October 13, 1914
Creator: Boze, James A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Sanitary Telephone-Mouthpiece.

Description: Patent for new and necessary improvements in sanitary telephone mouthpieces, such as improving overall construction of the telephone mouthpiece so that the mouthpiece is more sanitary, compact, and practical. Illustration and instruction included.
Date: March 28, 1916
Creator: Jenkins, Ed Monroe
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Automatic Telephone-Exchange System.

Description: Patent for "a simple system and arrangement which is especially adapted for a telephone exchange, which enables the instruments to be connected by a single wire, which dispenses with the use of an operator at the central station, which has automatic means for registering the messages sent by each subscriber, and which is provided with an automatic switching device by means of which one subscriber may connect with any other" (lines 10-19).
Date: December 5, 1893
Creator: Serdinko, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

[News Script: Telephone rates]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story about the telephone rate hike being discussed by the city council in Fort Worth.
Date: December 21, 1970, 8:25 a.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Telephone]

Description: Video footage from the WBAP-TV station in Fort Worth, Texas to accompany a news story about an unexpected walkout affecting the Dallas office of the Southwestern Bell Telephone Company.
Date: April 27, 1956
Duration: 1 minute 58 seconds
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections

Telephone.

Description: Patent for a simple and effective magneto telephone with a newly designed apparatus that allows the telephone to better receive and transmit calls and "will receive its magnetism from the magnets of the magneto call" (lines 21-22).
Date: November 13, 1894
Creator: Serdinko, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Telephone.

Description: Patent for "a single and effectual magneto telephone bot in receiving and transmitting and improving on [the inventor's] Patent No. 529,203" (lines 14-17).
Date: April 2, 1895
Creator: Serdinko, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Telephone.

Description: Patent for a new and improved telephone. This design "consists, first, in a set of U-shaped elastic magnets adapted to be supported by the head of the person sending and receiving messages, the end of said magnet or magnets connecting the receivers . . . second, in the peculiar construction and arrangement of the transmitter attached after the manner of a swinging bail to the receivers . . . third, providing supports for the telephone when not in use" (lines 32-43).
Date: August 24, 1880
Creator: McDermott, John P.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
Back to Top of Screen