Granted Patent
Utility
US 4,455,523 · App. 06/385,830
Portable battery powered system
Inventor:
Steven E. Koenck
Patented Case
View Patent ↗
Granted: Jun 19, 1984
Filed: Jun 7, 1982
Inventor
Steven E. Koenck
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.