IP Library › Granted Patent US 4,316,421
Granted Patent Utility
US 4,316,421 · App. 06/085,849

Anti-haloing throat plate

Inventor: Stanley J. Ketterer
Patented Case View Patent ↗
Granted: Feb 23, 1982 Filed: Oct 17, 1979
Inventor
Stanley J. Ketterer
Assignee (at issue)
The Singer Company Limited

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Quick Facts
Patent No.
US 4,316,421
App. No.
06/085,849
Filed
1979-10-17
Granted
1982-02-23
Kind
A