Collection
Serial/Series Title
2000 Census County Subdivision Block Map
63
2010 Census County Block Map
51
2010 Census P.L. 94-171 County Block Map
51
1990 Census County Block Map
46
2000 Census County Block Map
42
Digital US Topo Maps: 7.5 Minute Series (Topographic)
42
7.5 Minute Series (Topographic)
36
Digital Raster Graphic Topographic Maps: 7.5 Minute Series (Topographic)
20
Around the Bend
17
2007 Economic Census Map
12
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435 Matching Results
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Results:
433 - 435 of
435
Priming Device
Patent for a priming device. Intent of the priming device is to provide improvements to priming devices in internal combustion engines.
Date:
May 16, 1919
Creator:
Donada, Benito J
Object Type:
Patent
System:
The Portal to Texas History
Improved Priming Device for Internal-Combustion Engines
Patent for improvement in priming devices for Internal-Combustion engines created by placing an injector that forces fuel from the fuel tank into the intake manifold in time with the cylinder for faster combustion.
Date:
June 21, 1920
Creator:
Donada, Benito J.
Object Type:
Patent
System:
The Portal to Texas History
Envelop.
Patent for an adjustable envelop design for storing documents and articles. This is a design with flaps within the inner fold that are made to secure and protect the document. Straps that extend from the outer edge secure the outer flap over the contents as well as the inner protective flaps.
Date:
November 28, 1911
Creator:
Low, Eugene
Object Type:
Patent
System:
The Portal to Texas History