Granted Patent
Utility
US 4,550,476 · App. 06/570,280
Adjustment means for a driver bit
Inventor:
Charles J. DeCaro
Patented Case
View Patent ↗
Granted: Nov 5, 1985
Filed: Jan 12, 1984
Inventor
Charles J. DeCaro
Assignee (at issue)
Textron 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.