Louver

Details Louver Louver

1994-03-24

1996-06-11

Lichtenstein, Lisa B.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D23390

Patent

active

D03707237

REFERENCES:
patent: 1601815 (1926-10-01), Feinberg et al.
patent: 3011422 (1961-12-01), Scallon
House & Home, Mar., 1968, p. 43, Vent A, top right side of page.
Vent-Axia Inc. Adr. Cat, p. 3, FanB, top right side of page.

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