Environmental heating and cooling; fluid handling and sanitary e – Fluid handling or treatment equipment – Treatment
Patent
1997-03-27
1998-12-08
Douglas, Alan P.
Environmental heating and cooling; fluid handling and sanitary e
Fluid handling or treatment equipment
Treatment
2301
Patent
active
D04023498
REFERENCES:
patent: D26800 (1897-03-01), Cook
patent: 2569243 (1951-09-01), Kovacs
patent: 5413706 (1995-05-01), Graves
patent: 5582716 (1996-12-01), Nurse
Douglas Alan P.
Taylor Robin V.
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