Granted Patent
Utility
US 5,002,840 · App. 07/365,084
Switched emergency battery system
Inventors:
Alan J. Klebenow, Thomas J. Dougherty, Edward N. Mrotek, David A. Thuerk, Maurice Michaud
Patented Case
View Patent ↗
Granted: Mar 26, 1991
Filed: Jun 12, 1989
Inventors
Alan J. Klebenow
Thomas J. Dougherty
Edward N. Mrotek
David A. Thuerk
Maurice Michaud
Assignee (at issue)
Globe-Union 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.