Granted Patent
Utility
US 4,822,254 · App. 07/101,735
Oscillating cylinder pumping arrangement
Inventors:
Walter F. Prien, Meredith W. Meece, John H. Bolthouse, II
Patented Case
View Patent ↗
Granted: Apr 18, 1989
Filed: Sep 28, 1987
Inventors
Walter F. Prien
Meredith W. Meece
John H. Bolthouse, II
Assignee (at issue)
TI Pneumotive, Inc.
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.