Granted Patent
Utility
US 5,892,971 · App. 08/448,169
Portable data processing device having an indicia reader and a multi-tasking operating system capable of executing battery monitoring instructions while concurrently executing application programs
Inventors:
Arvin D. Danielson, Dennis A. Durbin
Patented Case
View Patent ↗
Granted: Apr 6, 1999
Filed: May 23, 1995
Inventors
Arvin D. Danielson
Dennis A. Durbin
Assignee (at issue)
Norand 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.