Granted Patent
Utility
US 4,474,543 · App. 06/361,108
Rotation prevention device for an orbiting member of a fluid displacement apparatus
Inventors:
Masaharu Hiraga, Takayuki Iimori, Seiichi Sakamoto
Patented Case
View Patent ↗
Granted: Oct 2, 1984
Filed: Mar 23, 1982
Inventors
Masaharu Hiraga
Takayuki Iimori
Seiichi Sakamoto
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.