Granted Patent
Utility
US 4,437,820 · App. 06/307,291
Scroll type fluid compressor unit with axial end surface sealing means
Inventors:
Kiyoshi Terauchi, Masaharu Hiraga
Patented Case
View Patent ↗
Granted: Mar 20, 1984
Filed: Sep 30, 1981
Inventors
Kiyoshi Terauchi
Masaharu Hiraga
Assignee (at issue)
SANDEN 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.