Environmental heating and cooling; fluid handling and sanitary e – Fluid handling or treatment equipment – Treatment
Patent
1997-11-06
1999-04-27
Douglas, Alan P.
Environmental heating and cooling; fluid handling and sanitary e
Fluid handling or treatment equipment
Treatment
2301
Patent
active
D04088875
REFERENCES:
patent: D235206 (1975-05-01), Bertrand
patent: D275312 (1984-08-01), Ohls
patent: D338705 (1993-08-01), Spokoiny
patent: D355241 (1995-02-01), Zylstra et al.
patent: D366516 (1996-01-01), Stewart
Dart Industries Inc.
Doninger John A.
Douglas Alan P.
Ross Taylor J.
Taylor Robin V.
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