Granted Patent
Utility
US 4,520,970 · App. 06/538,426
Cartridge tape drive having vacuum auto-threading
Inventors:
Donald O. Rasmussen, William C. Chow, Franklin J. Davio
Patented Case
View Patent ↗
Granted: Jun 4, 1985
Filed: Oct 3, 1983
Inventors
Donald O. Rasmussen
William C. Chow
Franklin J. Davio
Assignee (at issue)
KENNEDY ASSOCIATES, LLC
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.