Granted Patent
Utility
US 4,413,549 · App. 06/274,940
Limit switch actuator for fluid cylinders
Inventor:
Raymond J. Knable
Patented Case
View Patent ↗
Granted: Nov 8, 1983
Filed: Jun 18, 1981
Inventor
Raymond J. Knable
Assignee (at issue)
Parker-Hannifin Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.