Granted Patent
Utility
US 4,448,290 · App. 06/324,006
Safety device for a cable wound drum
Inventors:
Walter L. Reid, Jr., Robert A. Van Stone, Ralph L. Delano
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Nov 23, 1981
Inventors
Walter L. Reid, Jr.
Robert A. Van Stone
Ralph L. Delano
Assignee (at issue)
Acushnet 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.