Pipe insertion apparatus

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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D0489964

CLAIM:
The ornamental design of an pipe insertion apparatus, as shown and described.

REFERENCES:
patent: D212935 (1968-12-01), Appel
patent: D220901 (1971-06-01), Spaicher et al.
patent: 4300276 (1981-11-01), Davis
patent: D282905 (1986-03-01), Black
patent: D306135 (1990-02-01), Lin

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