Granted Patent
Utility
US 4,456,051 · App. 06/353,830
Scroll manufacturing method
Inventor:
Seiichi Hukuhara
Patented Case
View Patent ↗
Granted: Jun 26, 1984
Filed: Mar 2, 1982
Inventor
Seiichi Hukuhara
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.