Sash Control
Description:
Patent for a window sash control system. This mechanism allows the user to open a hard to reach window, such as one at the top of a stairwell, remotely via a series of ropes and pulleys.
Date:
June 12, 1917
Creator:
Coogle, John David
Item Type:
Refine your search to only
Patent
Partner:
UNT Libraries Government Documents Department