Granted Patent
Utility
US 5,003,901 · App. 07/374,820
Feeding rate adjusting unit of a sewing machine
Inventors:
Shuichi Sato, Yoshiharu Kobayashi
Patented Case
View Patent ↗
Granted: Apr 2, 1991
Filed: Jul 3, 1989
Inventors
Shuichi Sato
Yoshiharu Kobayashi
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.