Granted Patent
Utility
US 4,970,976 · App. 07/440,840
Overlock sewing machine
Inventors:
Koji Kitai, Masanori Mizunuma, Tatsuo Kikuchi
Patented Case
View Patent ↗
Granted: Nov 20, 1990
Filed: Nov 24, 1989
Inventors
Koji Kitai
Masanori Mizunuma
Tatsuo Kikuchi
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.