Granted Patent
Utility
US 5,506,572 · App. 08/081,933
Low battery detection system
Inventors:
Vernon E. Hills, Gary Kolbeck
Patented Case
View Patent ↗
Granted: Apr 9, 1996
Filed: Jun 23, 1993
Inventors
Vernon E. Hills
Gary Kolbeck
Assignee (at issue)
LodgeNet Entertainment 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.