Granted Patent
Utility
US 4,743,148 · App. 07/054,802
Chip breaker
Inventor:
Ira H. Wahlbeck
Patented Case
View Patent ↗
Granted: May 10, 1988
Filed: May 27, 1987
Inventor
Ira H. Wahlbeck
Assignee (at issue)
Jancy Engineering 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.