Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-02-22
1980-07-08
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2301
Patent
active
D02558262
REFERENCES:
patent: D170387 (1953-09-01), Russell
patent: 2880939 (1959-04-01), Esmall
patent: 2883939 (1959-04-01), Russell
patent: 3006282 (1961-10-01), Sison
patent: 3124080 (1964-03-01), Sison
patent: 3669575 (1972-06-01), Beckerer
Reinsch Jerry W.
Stout Ethan A.
Largen James R.
Spartan Labs, Inc.
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