Granted Patent
Utility
US 4,372,250 · App. 06/280,454
Milking inflation
Inventor:
Leigh R. Larson
Patented Case
View Patent ↗
Granted: Feb 8, 1983
Filed: Jul 16, 1981
Inventor
Leigh R. Larson
Assignee (at issue)
Hi-Life Rubber, Inc.
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.