Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1981-01-08
1983-09-13
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D 7 50, D 7 58, D 7 68, D 8 10, D0708
Patent
active
D02705621
REFERENCES:
patent: 2344507 (1944-03-01), Gookin
patent: 2637588 (1953-05-01), Burke
Jacobson Harvey B.
Kemper Catherine E.
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