Granted Patent
Utility
US 6,310,556 · App. 09/503,589
Apparatus and method for detecting a low-battery power condition and generating a user perceptible warning
Inventors:
Robert S. Green, Benjamin E. Nise
Patented Case
View Patent ↗
Granted: Oct 30, 2001
Filed: Feb 14, 2000
Inventors
Robert S. Green
Benjamin E. Nise
Assignee (at issue)
SONIC INNOVATIONS, 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.