UNT Libraries Government Documents Department - 9 Matching Results

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Envelop.

Description: Patent for "simple envelop which can be cheaply manufactured and which cannot be fraudulently tampered with or opened for the purpose of removing its contents without mutilating or injuring the envelop to an extent which would be noticable" (lines 9-14), including illustrations.
Date: April 3, 1917
Creator: Moore, Essie H.
Item Type: Refine your search to only Patent

Hub Ball-Bearing.

Description: Patent for a bearing to be employed in a wheel and axle system. The patented bearing is meant to reduce the usual amount of friction in the system to a minimum.
Date: August 26, 1913
Creator: Price, John W.
Item Type: Refine your search to only Patent
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