Granted Patent
Utility
US 4,772,448 · App. 06/816,782
Support pin system and locking nut retainer
Inventors:
Craig H. Popalis, Ronald J. Hopkins, John T. Land, Franklin D. Obermeyer
Patented Case
View Patent ↗
Granted: Sep 20, 1988
Filed: Jan 7, 1986
Inventors
Craig H. Popalis
Ronald J. Hopkins
John T. Land
Franklin D. Obermeyer
Assignee (at issue)
Westinghouse Electric Company LLC
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.