Concrete drum portable mixer

Details Concrete drum portable mixer Concrete drum portable mixer

2006-08-29

2006-08-29

Reid, Stella (Department: 2912)

Machines not elsewhere specified

Agricultural or construction machinery

Concrete, asphalt, or soil mixer

Design Patent

active

D0527391

CLAIM:
The ornamental design for a concrete drum portable mixer, as shown and described.

REFERENCES:
patent: 2478408 (1949-08-01), Lightburn
patent: D237901 (1975-12-01), Moran
patent: 4223997 (1980-09-01), Violet et al.
patent: D260150 (1981-08-01), Palmer
patent: 4491415 (1985-01-01), Bishop
patent: 4634284 (1987-01-01), Bishop
patent: D319832 (1991-09-01), Ross
patent: D421613 (2000-03-01), Shiotani
patent: D477331 (2003-07-01), Tsai
patent: D504135 (2005-04-01), Simpson et al.

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