Granted Patent
Utility
US 5,929,597 · App. 08/842,062
Portable electrical power system to supply direct current voltage
Inventors:
John Pfeifer, James C. Boda
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Apr 23, 1997
Inventors
John Pfeifer
James C. Boda
Assignee (at issue)
Fiskars 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.