Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1979-10-22
1982-05-18
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D2303
Patent
active
D02645009
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patent: 4028817 (1977-06-01), Winstel
patent: 4103735 (1978-08-01), Warner
patent: 4206804 (1980-06-01), Scholtes et al.
patent: 4219073 (1980-08-01), Talmadge et al.
patent: 4276929 (1981-07-01), Howard
Cwayna James R.
Kemper Catherine E.
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