Granted Patent
Utility
US 4,328,521 · App. 06/138,032
Gimbal spring retainer
Inventors:
Harold W. Pexton, Robert A. Smith
Patented Case
View Patent ↗
Granted: May 4, 1982
Filed: Apr 7, 1980
Inventors
Harold W. Pexton
Robert A. Smith
Assignee (at issue)
Magnetic Peripherals, Inc.
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.