4 Matching Results

Search Results

Results: 1 - 4

Window Sash And Curtain Operating Mechanism

Description: 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.
Partner: UNT Libraries Government Documents Department

Electric-Line-Apparatus Protector

Description: 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.
Partner: UNT Libraries Government Documents Department

Cultivator-Hobble

Description: Patent for an improved cultivator hobble, including illustrations.
Date: September 25, 1917
Creator: Hackfeld, John H.
Partner: UNT Libraries Government Documents Department

Evaporative Cooler

Description: Patent for an evaporative cooler. Illustrations included.
Date: June 25, 1912
Creator: Walkup, John A. & Walkup, Charles W.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen