Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-12-09
1979-10-30
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2304
Patent
active
D02533022
REFERENCES:
patent: D195747 (1963-07-01), Stolarz
patent: 3862819 (1975-01-01), Wentworth, Jr.
patent: 3924648 (1975-12-01), Etter
patent: 4009984 (1977-03-01), Morrison
patent: 4014637 (1977-03-01), Schena
patent: 4089633 (1978-05-01), Barghout
patent: 4111641 (1978-09-01), Morrison
patent: 4133628 (1979-01-01), Morrison
Largen James R.
Stevens Richard L.
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