USD463804SExpiredUtility

Trencher blade for earth working machine

53
Priority: Sep 25, 2001Filed: Sep 25, 2001Granted: Oct 1, 2002
Est. expirySep 25, 2021(expired)· nominal 20-yr term from priority
Inventors:Roger D. PorterJerome C. Burroughs
53
PatentIndex Score
9
Cited by
39
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a trencher blade for earth working machine, as shown and described.

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