Granted Patent
Utility
US 5,770,082 · App. 08/643,033
Self-purging extractor
Inventor:
George E. Anderson
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: May 2, 1996
Inventor
George E. Anderson
Assignee (at issue)
CROWN IRON WORKS COMPANY LLC
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.