Granted Patent
Utility
US 4,732,294 · App. 07/024,946
Safety latch means for filter assembly
Inventors:
James R. Bohler, Jerry E. Stephenson, Thomas E. Drawbaugh
Patented Case
View Patent ↗
Granted: Mar 22, 1988
Filed: Mar 12, 1987
Inventors
James R. Bohler
Jerry E. Stephenson
Thomas E. Drawbaugh
Assignee (at issue)
Parker-Hannifin Corporation
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.