Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-10-19
1979-01-16
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2302
Patent
active
D02508273
REFERENCES:
patent: D198257 (1964-05-01), Kerns et al.
patent: D214270 (1969-05-01), Bonsack
patent: D226607 (1973-04-01), Lawrence
patent: D229180 (1973-11-01), Mollerstedt
patent: D244292 (1977-05-01), Ridgeway
patent: 2081728 (1937-05-01), Bassett
Lande Gary E.
Largen James R.
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