Granted Patent
Utility
US 5,709,535 · App. 08/633,421
Multi-cylinder reciprocating compressor having improved discharge valve stopper assembly
Inventors:
Katsutoshi Enomoto, Hisao Ichikawa, Kiyoshi Yoshii, Katsuhiko Arai
Patented Case
View Patent ↗
Granted: Jan 20, 1998
Filed: Apr 17, 1996
Inventors
Katsutoshi Enomoto
Hisao Ichikawa
Kiyoshi Yoshii
Katsuhiko Arai
Assignee (at issue)
Zexel GmbH
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.