4 Matching Results

Search Results

Results: 1 - 4

Mold.

Description: Patent for a form of mold that is constructed to expand and contract quickly to form sidewalks and curbs.
Date: July 15, 1913
Creator: Forbis, Frank H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Paving

Description: Patent for road paving material with cement as a base and stones or gravel used as a topping. Asphalt is poured over the gravel to extend the life of the paving.
Date: June 24, 1913
Creator: MacDonald, Ray
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Culvert.

Description: Patent for metal road culvert improvements. Light weight, but sturdy, interlocking metal sheets are used. They can be stacked for cheaper and easier shipping. The culvert allows large amounts of water to flow through.
Date: April 22, 1913
Creator: Youngblood, David Franklin
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
Back to Top of Screen