IP Library › Granted Patent US 5,603,383
Granted Patent Utility
US 5,603,383 · App. 08/533,323

Reversible pneumatic ground piercing tool

Inventors: Steven W. Wentworth, Robert F. Crane, Mark D. Randa
Patented Case View Patent ↗
Granted: Feb 18, 1997 Filed: Sep 25, 1995
Inventors
Steven W. Wentworth
Robert F. Crane
Mark D. Randa
Assignee (at issue)
Earth Tool Company LLC

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Quick Facts
Patent No.
US 5,603,383
App. No.
08/533,323
Filed
1995-09-25
Granted
1997-02-18
Kind
A