Chimney cap

Details Chimney cap Chimney cap

1976-05-03

1977-11-22

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2304

Patent

active

D02464640

REFERENCES:
patent: D30284 (1899-02-01), Holmberg
patent: D203632 (1966-02-01), Carpino
patent: 494454 (1893-03-01), Ashton
patent: 674360 (1901-05-01), LeCount
patent: 2536235 (1951-01-01), Steelman et al.
patent: 2755730 (1956-07-01), Douty
patent: 2830525 (1958-04-01), Wilhite

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