Collection
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5 Matching Results
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5
Concrete Form.
Patent for a circular concrete form. The form is adjustable and allows nesting for storage and transport.
Date:
October 17, 1922
Creator:
Harris, John W.
Object Type:
Patent
System:
The Portal to Texas History
Pearsall 1-c Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:48000
Date:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Pearsall 1-b Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:48000
Date:
1925
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Pearsall Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:62500
Date:
1927
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Gasoline Purifier
Patent for improved Gasoline-Purifiers, based off of prior models.
Date:
January 10, 1920
Creator:
Harris, Ward Rolland
Object Type:
Patent
System:
The Portal to Texas History