Granted Patent
Utility
US 4,097,727 · App. 05/830,002
Circuit for controlling automatic off-line operation of an on-line card reader
Inventor:
Bryan D. Ulch
Patented Case
View Patent ↗
Granted: Jun 27, 1978
Filed: Sep 1, 1977
Inventor
Bryan D. Ulch
Assignee (at issue)
ATO BV
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.