Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1985-07-24
1987-09-22
Burke, Wallace R.
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23 3, D23149, D23146
Patent
active
D02920174
REFERENCES:
patent: D250411 (1978-11-01), Krueger et al.
patent: D257544 (1980-11-01), Johnson
patent: D257566 (1980-11-01), Kottmeier et al.
patent: 4294407 (1981-10-01), Reichl et al.
Burke Wallace R.
Uchida Manufacturing Co. Ltd.
Vinson Brian N.
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