Granted Patent
Utility
US 4,424,271 · App. 06/418,352
Deposition process
Inventors:
Beat G. Keel, Tuan P. Tran, Mara M. Koller, Larry D. Zimmerman, Patrick C. Darst
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Sep 15, 1982
Inventors
Beat G. Keel
Tuan P. Tran
Mara M. Koller
Larry D. Zimmerman
Patrick C. Darst
Assignee (at issue)
Magnetic Peripherals, Inc.
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.