IP Library › Granted Patent US 4,428,131
Granted Patent Utility
US 4,428,131 · App. 06/372,171

Excavating tooth

Inventor: Frederick C. Hahn
Patented Case View Patent ↗
Granted: Jan 31, 1984 Filed: Apr 26, 1982
Inventor
Frederick C. Hahn
Assignee (at issue)
ESCO GROUP LLC

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Quick Facts
Patent No.
US 4,428,131
App. No.
06/372,171
Filed
1982-04-26
Granted
1984-01-31
Kind
A