Air delivery duct

Details Air delivery duct Air delivery duct

1986-07-01

1988-08-09

Burke, Wallace R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

Patent

active

D02971585

REFERENCES:
patent: D238959 (1976-02-01), Kurokawa
patent: D239388 (1976-03-01), Larkfeldt et al.
patent: 4135440 (1979-01-01), Schmidt et al.
patent: 4203302 (1980-05-01), Lapeyre
patent: 4250800 (1981-02-01), Brockmeyer
patent: 4253384 (1981-03-01), Schmidt et al.
patent: 4353411 (1982-10-01), Harter et al.
patent: 4612909 (1986-09-01), Lee

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