Granted Patent
Utility
US 4,439,719 · App. 06/396,675
Variable timing circuit for motive power battery chargers
Inventors:
Frederic J. Lambert, Donald J. Bosack, David K. Johansen
Patented Case
View Patent ↗
Granted: Mar 27, 1984
Filed: Jul 9, 1982
Inventors
Frederic J. Lambert
Donald J. Bosack
David K. Johansen
Assignee (at issue)
GNB Batteries 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.