Ventilator

Details Ventilator Ventilator

1979-06-11

1981-07-21

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2304

Patent

active

D02599511

REFERENCES:
patent: D34037 (1901-02-01), Reynolds
patent: D191018 (1961-08-01), Kearney et al.
patent: D193642 (1962-09-01), Patterson
patent: 838637 (1906-12-01), Mittinger, Jr.
patent: 2379638 (1945-07-01), Hughes et al.
patent: 2571513 (1951-10-01), Ammerman
patent: 2823598 (1958-02-01), Jenn
patent: 2824507 (1958-02-01), Alldritt et al.
patent: 3168780 (1965-02-01), Breidert
patent: 3386368 (1968-06-01), Fielding
patent: 3783767 (1974-01-01), Stalker
Air Cond., Heating & Ventilation, Apr. 1968, p. 15, "Strong Silent Type", item.
Heating & Air Conditioning Contractor, p. 71, Mar. 1964, "Spun Line Roof Exhausters", items.

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