Collection
Counties
3 Matching Results
Results open in a new window/tab.
Results:
1 - 3 of
3
Detachable Washer
Patent for a detachable Washer which can be applied or removed from a bolt, without having to remove the bolt itself.
Date:
August 8, 1922
Creator:
Dubbs, Sylvester S.
System:
The Portal to Texas History
Map Hanger
Patent for improvements in map hangers. The purpose is to provide a map exhibiting hanger to use in support for a plurality of maps, particularly maps that have information on the back.
Date:
January 31, 1922
Creator:
Chunn, Richard M.
System:
The Portal to Texas History
Wrench
Patent for an improvement to wrenches. This wrench uses a sliding jaw system for increased utility.
Date:
April 29, 1920
Creator:
Grogan, Edward W.
System:
The Portal to Texas History