Collection
Serial/Series Title
1990 Census County Block Map
106
7.5 Minute Series (Topographic)
105
2000 Census County Subdivision Block Map
103
2000 Census County Block Map
96
2010 Census County Block Map
81
2010 Census P.L. 94-171 County Block Map
81
Digital US Topo Maps: 7.5 Minute Series (Topographic)
52
Digital Raster Graphic Topographic Maps: 7.5 Minute Series (Topographic)
25
Western United States 1:250,000
23
15 Minute Series (Topographic)
10
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1,084 Matching Results
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1,081 - 1,084 of
1,084
Car-Coupling.
Patent for improved car couplings "of the Janney type, capable of readily coupling on short curved, and adapted to be either coupled or uncoupled without going between cars. A further object of the invention is to provide means whereby the parts may be readily set for automatic coupling, or to prevent coupling." (Lines 13-20) Includes instructions and illustrations.
Date:
March 19, 1895
Creator:
Armstrong, James P.
Object Type:
Patent
System:
The Portal to Texas History
Cheese-Cutting Gage.
Letter Patent for gage "for cutting articles in bulk, such as whole cheese" (lines 9-10); including illustration and instructions
Date:
May 1, 1900
Creator:
Pittman, James Pinkney
Object Type:
Patent
System:
The Portal to Texas History
Automatic Slack-Take-Up and Cooling Device.
Patent for new and useful improvements to Automatic Slack-Take-Up and Cooling Devices for the manufacturing of flexible roofing and other similar flexible materials, including illustrations.
Date:
May 22, 1917
Creator:
Smith, Frederick C.
Object Type:
Patent
System:
The Portal to Texas History
Automatic Safety Target.
Patent for a target device for pistols and rifles which allows for the motion of the target being hit to move another target into view.
Date:
August 3, 1920
Creator:
Briggs, George F.
Object Type:
Patent
System:
The Portal to Texas History