Mine dewatering apparatus

Details Mine dewatering apparatus Mine dewatering apparatus

2011-04-26

2011-04-26

Seifert, Ralf (Department: 2914)

Machines not elsewhere specified

Pump or compressor

Design Patent

active

D0636791

CLAIM:
The ornamental design for the mine dewatering apparatus, as shown and described herein.

REFERENCES:
patent: D155094 (1949-09-01), Lewis
patent: D183115 (1958-07-01), Calloway
patent: D202843 (1965-11-01), Dales
patent: D229717 (1973-12-01), Mixon
patent: D241459 (1976-09-01), Versten
patent: D276434 (1984-11-01), Laney
patent: 4854822 (1989-08-01), Darroch
patent: D391579 (1998-03-01), Myers
patent: D573341 (2008-07-01), van der Lande

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