Retractable down draft vent unit for removing smoke and grease v

Details Retractable down draft vent unit for removing smoke and grease v Retractable down draft vent unit for removing smoke and grease v

1989-03-30

1992-06-30

Burke, Wallace R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

Patent

active

D03275388

REFERENCES:
patent: 3583506 (1971-06-01), Hagdorn

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