Granted Patent
Utility
US 4,012,674 · App. 05/565,593
Dual motor web material transport system
Inventors:
Merlin D. Spitsbergen, James Hughes
Patented Case
View Patent ↗
Granted: Mar 15, 1977
Filed: Apr 7, 1975
Inventors
Merlin D. Spitsbergen
James Hughes
Assignee (at issue)
Computer 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.