Granted Patent
Utility
US 5,187,422 · App. 07/738,526
Charger for batteries of different type
Inventors:
John M. Izenbaard, Christopher Philipp, Michael W. Steffler
Patented Case
View Patent ↗
Granted: Feb 16, 1993
Filed: Jul 31, 1991
Inventors
John M. Izenbaard
Christopher Philipp
Michael W. Steffler
Assignee (at issue)
STRYKER 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.