Granted Patent
Utility
US 4,440,529 · App. 06/258,920
Method and means for operating a drill for eliminating axial scratches during retraction
Inventors:
Samuel P. Henslee, Pascal J. Noronha, John Logan
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Apr 30, 1981
Inventors
Samuel P. Henslee
Pascal J. Noronha
John Logan
Assignee (at issue)
General Dynamics Corporation
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.