Granted Patent
Utility
US 4,466,784 · App. 06/354,512
Drive mechanism for a scroll type fluid displacement apparatus
Inventor:
Masaharu Hiraga
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: Mar 3, 1982
Inventor
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.