Ventilating louver

Details Ventilating louver Ventilating louver

1995-08-09

1997-04-01

Lucas, Susan J.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

Patent

active

D03786986

REFERENCES:
patent: D118359 (1939-04-01), Arenberg
patent: D120772 (1939-04-01), Arenberg
patent: D120773 (1940-05-01), Arenberg
patent: D188212 (1960-06-01), Ruppe
patent: D198557 (1964-06-01), Stark et al.
patent: D250021 (1978-10-01), Barbera
patent: D258083 (1981-01-01), Gammell
patent: D275988 (1984-10-01), Walker
patent: D287888 (1987-01-01), Castor et al.
Copy of extract from a catalog issued pror to Feb., 1995 (1 sheet).

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