IP Library › Granted Patent US 6,568,488
Granted Patent Utility
US 6,568,488 · App. 09/880,270

Roller pipe burster

Inventors: Steven W. Wentworth, Robert F. Crane, Paul Hau
Patented Case View Patent ↗
Granted: May 27, 2003 Filed: Jun 13, 2001
Inventors
Steven W. Wentworth
Robert F. Crane
Paul Hau
Assignee (at issue)
Earth Tool Company LLC

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Quick Facts
Patent No.
US 6,568,488
App. No.
09/880,270
Filed
2001-06-13
Granted
2003-05-27
Kind
B2