Granted Patent
Utility
US 6,573,621 · App. 09/727,664
AC/DC power supply system for power tools
Inventor:
Peter Neumann
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Dec 1, 2000
Inventor
Peter Neumann
Assignee (at issue)
S-B Power Tool 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.