Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-09-22
1981-04-14
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23 11, 417234, D2304
Patent
active
D02589087
REFERENCES:
patent: D235871 (1975-07-01), Parke et al.
patent: 3883271 (1975-05-01), Mertes
patent: 3900165 (1975-08-01), Parke et al.
patent: 4132507 (1979-01-01), Akiyama et al.
Holler Norbert P.
Kioritz & Corporation
Largen James R.
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