Granted Patent
Utility
US 6,007,940 · App. 08/979,017
Portable power tool having low rate, rechargeable batteries
Inventor:
Robert M. Spotnitz
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Nov 26, 1997
Inventor
Robert M. Spotnitz
Assignee (at issue)
Celgard, LLC
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.