Granted Patent
Utility
US 5,053,199 · App. 07/313,244
Electronically readable information carrier
Inventors:
Dale A. Keiser, Charles A. Jackson, William R. Boyd
Patented Case
View Patent ↗
Granted: Oct 1, 1991
Filed: Feb 21, 1989
Inventors
Dale A. Keiser
Charles A. Jackson
William R. Boyd
Assignee (at issue)
Boehringer Mannheim GmbH
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.