Resource Type
Counties
4 Matching Results
Results open in a new window/tab.
Results:
1 - 4 of
4
Evaporative Cooler
Patent for an evaporative cooler. Illustrations included.
Date:
June 25, 1912
Creator:
Walkup, John A. & Walkup, Charles W.
System:
The Portal to Texas History
Electric-Line-Apparatus Protector
Patent for electric-line-apparatus protector used to protect telephone and other electrical circuits from damaged caused by electricity. This is a simple and efficient device.
Date:
July 25, 1916
Creator:
Higgins, Peter K. & Parker, Frederick R.
System:
The Portal to Texas History
Cultivator-Hobble
Patent for an improved cultivator hobble, including illustrations.
Date:
September 25, 1917
Creator:
Hackfeld, John H.
System:
The Portal to Texas History
Window Sash And Curtain Operating Mechanism
Patent for a window sash and curtain mechanism that works in tandem with electronic security systems. Sash/Curtains can be moved normally, but an alarm can be set to detect when the window itself is tampered with.
Date:
October 25, 1917
Creator:
Schwarz, Henry W.
System:
The Portal to Texas History