Oil pumping device

Details Oil pumping device Oil pumping device

2001-08-10

2003-01-21

Seifert, Ralf (Department: 2914)

Machines not elsewhere specified

Pump or compressor

Design Patent

active

D0469110

CLAIM:
The ornamental design for an oil pumping device, as shown and as described.

REFERENCES:
patent: 2635550 (1953-04-01), Granberg
patent: D263050 (1982-02-01), Chang
patent: D293912 (1988-01-01), Wilgus et al.
patent: D293913 (1988-01-01), Wilgus et al.
patent: D328303 (1992-07-01), Griffith et al.
patent: 5207562 (1993-05-01), Neibrook et al.
patent: D441376 (2001-05-01), Gohil et al.
patent: D446220 (2001-08-01), Boughton et al.
patent: D449310 (2001-10-01), Agresta et al.
patent: 6321874 (2001-11-01), Miyamoto
patent: 6328132 (2001-12-01), Zager
patent: D453775 (2002-02-01), Chou

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