Granted Patent
Utility
US 4,453,899 · App. 06/267,456
Scroll type fluid displacement apparatus with reinforced wrap seals
Inventors:
Masaharu Hiraga, Tadao Kogima, Nobuaki Saegusa
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: May 27, 1981
Inventors
Masaharu Hiraga
Tadao Kogima
Nobuaki Saegusa
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.