Granted Patent
Utility
US 5,010,832 · App. 07/410,788
Quick feed drive unit having an electromagnetic clutch, a worm, worm wheel, and pattern wheel for feeding a sewn cloth in a perforating sewing machine
Inventors:
Katsuo Hiratsuka, Yoshiyuki Odaka, Takeshi Yoshida
Patented Case
View Patent ↗
Granted: Apr 30, 1991
Filed: Sep 22, 1989
Inventors
Katsuo Hiratsuka
Yoshiyuki Odaka
Takeshi Yoshida
Assignee (at issue)
SSMC 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.