Granted Patent
Utility
US 4,333,276 · App. 06/134,245
Tumbling apparatus
Inventor:
James R. Goff
Patented Case
View Patent ↗
Granted: Jun 8, 1982
Filed: Mar 26, 1980
Inventor
James R. Goff
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.