Environmental heating and cooling; fluid handling and sanitary e – Fluid handling or treatment equipment – Treatment
Patent
1994-05-13
1997-01-21
Zarfas, Louis S.
Environmental heating and cooling; fluid handling and sanitary e
Fluid handling or treatment equipment
Treatment
D23207
Patent
active
D03775151
REFERENCES:
patent: D256944 (1980-09-01), Fox, Jr.
patent: D296925 (1988-07-01), Groezinger et al.
patent: D328333 (1992-07-01), Casberg
patent: 2568181 (1951-09-01), Zimmerman et al.
patent: 2955712 (1960-10-01), Gutkowski
Hembree Richard D.
Lund James L.
Hannon Monica A.
Recovery Engineering, Inc.
Zarfas Louis S,.
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