Granted Patent
Utility
US 5,136,129 · App. 07/479,956
Pressure operated switch construction and method of making
Inventors:
William J. Kaigler, Thomas M. Buckshaw, David T. Llewellyn
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Feb 14, 1990
Inventors
William J. Kaigler
Thomas M. Buckshaw
David T. Llewellyn
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.