Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Air treatment
Patent
1998-07-22
2000-06-27
Lichtenstein, Lisa
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Air treatment
D23355, 2304
Patent
active
D04272994
REFERENCES:
patent: 3820536 (1974-06-01), Anspach, Jr. et al.
patent: 3935803 (1976-02-01), Bush
patent: 4512245 (1985-04-01), Goldman
patent: 4531956 (1985-07-01), Howorth
patent: 4563943 (1986-01-01), Bertelsen
patent: 4647295 (1987-03-01), Christ
patent: 4775001 (1988-10-01), Ward et al.
Lichtenstein Lisa
Mattern Jr. Roy E.
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