Pond filter

Details Pond filter Pond filter

1995-05-22

1996-10-29

Word, A. Hugo

Environmental heating and cooling; fluid handling and sanitary e

Fluid handling or treatment equipment

Treatment

D23209

Patent

active

D03751384

REFERENCES:
patent: D280658 (1985-09-01), Willinger
patent: D307461 (1990-04-01), Kim
patent: D340505 (1993-10-01), Anderson
patent: 4552657 (1985-11-01), Ogawa
patent: 5294335 (1994-03-01), Chiang

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