Granted Patent
Utility
US 4,320,537 · App. 06/143,917
Shoulder pad
Inventor:
Hal D. Mitchell
Patented Case
View Patent ↗
Granted: Mar 23, 1982
Filed: Apr 25, 1980
Inventor
Hal D. Mitchell
Assignee (at issue)
ATO BV
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.