Granted Patent
Utility
US 5,441,375 · App. 08/161,932
Cover breaker assembly and method
Inventor:
Richard B. Hawkes
Patented Case
View Patent ↗
Granted: Aug 15, 1995
Filed: Dec 3, 1993
Inventor
Richard B. Hawkes
Assignee (at issue)
AM International, 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.