Chimney cowl

Details Chimney cowl Chimney cowl

1980-09-26

1983-01-18

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2304

Patent

active

D02676672

REFERENCES:
patent: D138172 (1944-06-01), Lutze
patent: D246464 (1977-11-01), Brazell
patent: 341440 (1886-05-01), Bailey
patent: 845862 (1907-03-01), Egy
patent: 870976 (1907-11-01), Ludwig
patent: 920621 (1909-05-01), Neiburger
patent: 1463664 (1923-07-01), Bowman
patent: 2188709 (1940-01-01), Friedman
patent: 3242848 (1966-03-01), Guenther
patent: 3715976 (1973-02-01), Cano

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