Trenching shovel

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning

Design Patent

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Design Patent

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D0462244

CLAIM:
The ornamental design for a trenching shovel, as shown and described.

REFERENCES:
patent: 2572230 (1951-10-01), Williams
patent: D262686 (1982-01-01), Anderson
patent: D272799 (1984-02-01), Pluss
patent: 4718708 (1988-01-01), Zacuto
patent: 4904011 (1990-02-01), Hawk
patent: 5476299 (1995-12-01), Whaley
patent: 5520429 (1996-05-01), Gregory
patent: 5669649 (1997-09-01), Metcalf
patent: 5791708 (1998-08-01), Capriotti
patent: 5960891 (1999-10-01), Sheehan

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