IP Library › Granted Patent US 4,494,471
Granted Patent Utility
US 4,494,471 · App. 06/581,832

Buttonhole foot and shank assembly

Inventor: Thaddeus J. Zylbert
Patented Case View Patent ↗
Granted: Jan 22, 1985 Filed: Feb 21, 1984
Inventor
Thaddeus J. Zylbert
Assignee (at issue)
The Singer Company Limited

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Quick Facts
Patent No.
US 4,494,471
App. No.
06/581,832
Filed
1984-02-21
Granted
1985-01-22
Kind
A