Air duct

Details Air duct Air duct

1996-05-10

1998-04-21

Lichtenstein, Lisa

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D23382, D23391, 2304

Patent

active

D03937097

REFERENCES:
patent: 2616355 (1952-11-01), McCabe et al.
patent: 4241789 (1980-12-01), Froseh
patent: 5211605 (1993-05-01), Shiga et al.

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