Granted Patent
Utility
US 4,198,307 · App. 05/927,383
Polymer based magnetic tags
Inventors:
Ami E. Berkowitz, Fred F. Holub
Patented Case
View Patent ↗
Granted: Apr 15, 1980
Filed: Jul 24, 1978
Inventors
Ami E. Berkowitz
Fred F. Holub
Assignee (at issue)
General Electric Company
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.