Granted Patent
Utility
US 3,930,601 · App. 05/526,372
Sheet material pin feed tractor mechanism
Inventor:
Yoshihisa Masuda
Patented Case
View Patent ↗
Granted: Jan 6, 1976
Filed: Nov 22, 1974
Inventor
Yoshihisa Masuda
Assignee (at issue)
Centronics Data Computer Corporation
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.