Granted Patent
Utility
US 4,308,677 · App. 06/148,181
Ejector type scraper
Inventor:
William C. Behm
Patented Case
View Patent ↗
Granted: Jan 5, 1982
Filed: May 19, 1980
Inventor
William C. Behm
Assignee (at issue)
Reynolds Manufacturing Company
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.