Hand operated pump

Details Hand operated pump Hand operated pump

1993-06-09

1994-10-25

Seifert, Ralf T.

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Hand or foot operated pump or well curb

D15 7

Patent

active

D03518965

REFERENCES:
patent: D304970 (1989-12-01), Gibb
patent: D309174 (1990-07-01), Furusawa
patent: D321037 (1991-10-01), Furusawa
patent: D343397 (1994-01-01), Wong
patent: 2573375 (1951-10-01), Winstead
patent: 5016894 (1991-05-01), Alioto

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