Roof-mounted smoke exhaust for use in removing cigarette smoke f

Details Roof-mounted smoke exhaust for use in removing cigarette smoke f Roof-mounted smoke exhaust for use in removing cigarette smoke f

1993-01-21

1994-08-16

Burke, Wallace R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

Patent

active

D03497631

REFERENCES:
patent: 1738641 (1929-12-01), Cowan

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