Counties
Decade
Month
Day
4 Matching Results
Results open in a new window/tab.
Results:
1 - 4 of
4
Air-Brake Governor
Patent for an air brake governor improvement that regulates the pressure of fluid or air in the braking system as to prevent it from braking with too much pressure.
Date:
July 10, 1906
Creator:
Williams, Leonard F.
System:
The Portal to Texas History
Plow Attachment.
Patent for the ability to attach one or more plows simply and inexpensively so users can customize their plowing methods as needed.
Date:
February 10, 1914
Creator:
Welch, Drew O.
System:
The Portal to Texas History
Wrench.
Patent for a wrench with an adjustable handle for multiple uses, with illustrations.
Date:
April 10, 1906
Creator:
Land, Henry Clay
System:
The Portal to Texas History
Engine
Patent for improvements to gas engines, including the addition of improved pistons.
Date:
August 10, 1915
Creator:
Hunter, Elbert I.
System:
The Portal to Texas History