Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1977-12-21
1980-04-15
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02547490
REFERENCES:
patent: D90641 (1933-09-01), Yerges
patent: D93371 (1934-09-01), Yerges
patent: D207139 (1967-03-01), Jakobsson
Kemper Catherine E.
Renz Jr. Eugene E.
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