Granted Patent
Utility
US 4,848,122 · App. 07/075,534
Method and apparatus for deburring using shot
Inventor:
Mark Sullivan
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: Jul 20, 1987
Inventor
Mark Sullivan
Assignee (at issue)
Chemtronics Co., Ltd.
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.