Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1978-08-31
1981-01-27
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2304
Patent
active
D02580810
REFERENCES:
patent: D110025 (1938-06-01), Hjermstad
patent: D192560 (1962-04-01), Rinaldi
patent: D238675 (1976-02-01), Schimanski
Britt William J.
Wilson Daniel C.
Largen James R.
Morton-Norwich Products, Inc.
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