Granted Patent
Utility
US 4,309,676 · App. 06/185,892
Instantaneous compressor and instantaneous expandor
Inventors:
Hubert C. Martin, Jr., Gerald W. Beene
Patented Case
View Patent ↗
Granted: Jan 5, 1982
Filed: Sep 10, 1980
Inventors
Hubert C. Martin, Jr.
Gerald W. Beene
Assignee (at issue)
Reliance Electric Limited
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.