Ventilator hood

Details Ventilator hood Ventilator hood

1976-08-05

1978-02-14

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2304

Patent

active

D02472503

REFERENCES:
patent: D222587 (1971-11-01), Miller
patent: 1100234 (1914-06-01), Ecker
patent: 1148702 (1915-08-01), Meixell
patent: 1701385 (1929-02-01), Meixell
patent: 2018020 (1935-10-01), Guenther
patent: 2563272 (1951-08-01), Rachlin
patent: 3242848 (1966-03-01), Guenther
patent: 3661070 (1972-05-01), Miller

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