Granted Patent
Utility
US 4,732,013 · App. 06/526,609
Freezer with helical scraper blade
Inventor:
Norman L. Beck
Patented Case
View Patent ↗
Granted: Mar 22, 1988
Filed: Aug 26, 1983
Inventor
Norman L. Beck
Assignee (at issue)
Taylor Freezer 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.