Granted Patent
Utility
US 5,080,130 · App. 07/532,204
Gas compressor head and discharge valve construction
Inventors:
Gerald L. Terwilliger, Robert D. Douglas, Prasanta K. Roy, Milton M. Kosfeld
Patented Case
View Patent ↗
Granted: Jan 14, 1992
Filed: Jun 1, 1990
Inventors
Gerald L. Terwilliger
Robert D. Douglas
Prasanta K. Roy
Milton M. Kosfeld
Assignee (at issue)
Bristol Compressors, 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.