Granted Patent
Utility
US 4,655,693 · App. 06/201,517
Compressor apparatus
Inventor:
Thomas E. Grime
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Oct 27, 1980
Inventor
Thomas E. Grime
Assignee (at issue)
Champion Spark Plug 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.