Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1980-07-18
1982-12-28
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02674246
REFERENCES:
patent: D225851 (1973-01-01), Cowan
patent: D259892 (1981-07-01), Boekamp
Becker Robert W.
Boldt Melvin H.
Huff Robert S.
Morrison Thurber H.
Kemper Catherine E.
National Presto Industries, Inc.
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