Granted Patent
Utility
US 4,307,438 · App. 06/109,652
Hinged back panel input/output board
Inventor:
Richard M. Grubb
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Jan 4, 1980
Inventor
Richard M. Grubb
Assignee (at issue)
Augat 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.