Turbine ventilator

Details Turbine ventilator Turbine ventilator

1976-08-16

1978-03-14

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2304

Patent

active

D02475090

REFERENCES:
patent: D83411 (1931-02-01), McCluney et al.
patent: 2797632 (1957-07-01), Hook
patent: 2856838 (1958-10-01), Maek
patent: 3267833 (1966-08-01), Artis et al.
patent: 3392659 (1968-07-01), Rousey
patent: 3460855 (1969-08-01), Belden
patent: 3523500 (1970-08-01), Artis et al.
patent: 3590720 (1971-07-01), Siegal

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