Granted Patent
Utility
US 4,873,932 · App. 07/304,540
Stepper driven stitch patterning mechanism for sewing machines using spiral cam groove and follower
Inventor:
Kenneth D. Adams
Patented Case
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Granted: Oct 17, 1989
Filed: Feb 1, 1989
Inventor
Kenneth D. Adams
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.