Water-circulating heat extractor

Details Water-circulating heat extractor Water-circulating heat extractor

1982-05-25

1984-11-27

Kemper, Catherine E.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D23136

Patent

active

D02765497

REFERENCES:
patent: 631184 (1899-08-01), Sheppard
patent: 647427 (1900-04-01), Sawyer
patent: 1028261 (1912-06-01), Nichol
patent: 1122648 (1914-12-01), Schwartz
patent: 1125183 (1915-01-01), Rymal
patent: 1665520 (1928-04-01), Wood
patent: 4088113 (1978-05-01), McIntire et al.
patent: 4131231 (1978-12-01), Cleer, Jr.
patent: 4195617 (1980-04-01), Scopetti et al.
patent: 4257557 (1981-03-01), Thomasma et al.
patent: 4344411 (1982-08-01), Dearborn
patent: 4352454 (1982-10-01), Ewing

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