Granted Patent
Utility
US 4,461,097 · App. 06/336,053
Aerator
Inventor:
David Thornton
Patented Case
View Patent ↗
Granted: Jul 24, 1984
Filed: Dec 31, 1981
Inventor
David Thornton
Assignee (at issue)
American Sterilizer 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.