Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1982-09-27
1985-02-05
Largen, James R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
4234, 4237
Patent
active
D02775000
REFERENCES:
patent: D169590 (1953-05-01), Hauser
patent: D236120 (1975-07-01), O'Neil
patent: D237185 (1975-10-01), O'Neil
patent: D262486 (1981-12-01), Boyter
patent: 426287 (1890-04-01), Larkin
patent: 538168 (1895-04-01), Keeler
patent: 683421 (1901-09-01), Cowles
patent: 2514537 (1950-07-01), Cullum
patent: 3588927 (1971-06-01), Springer
patent: 3921235 (1975-11-01), O'Neil
Kinney Richard G.
Largen James R.
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