Building roof vent fixture

Details Building roof vent fixture Building roof vent fixture

2000-03-23

2000-11-07

Siegel, Mitchell

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

2304

Patent

active

D04334965

REFERENCES:
patent: 2692548 (1954-10-01), Knorr
patent: 2839986 (1958-06-01), Herman
patent: 2885944 (1959-05-01), Bates

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