Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1982-06-07
1984-12-18
Kemper, Catherine E.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23120
Patent
active
D02768402
REFERENCES:
patent: D74996 (1928-04-01), Wolcott
patent: D96952 (1935-09-01), Adams et al.
patent: D100376 (1936-07-01), Jones et al.
patent: D108753 (1938-03-01), Schneider
patent: D129938 (1941-10-01), Kessler
patent: D143684 (1946-01-01), Van Fleet
patent: D176390 (1955-12-01), Theisen
patent: D267970 (1983-02-01), Gronwick
Kemper Catherine E.
Patco Energy, Inc.
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