Granted Patent
Utility
US 4,639,655 · App. 06/601,958
Method and apparatus for battery charging
Inventors:
Lawrence A. Westhaver, Ronald E. Ruksznis
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: Apr 19, 1984
Inventors
Lawrence A. Westhaver
Ronald E. Ruksznis
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.