Granted Patent
Utility
US 4,840,457 · App. 07/134,121
Angled strut diaphragm spring
Inventor:
James Norman Remer
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Dec 17, 1987
Inventor
James Norman Remer
Assignee (at issue)
General Electric Company
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.