Convertible fan unit

Details Convertible fan unit Convertible fan unit

1989-08-07

1991-07-23

Burke, Wallace R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

Patent

active

D03185265

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Lakewood Fan Cat., p. 9, High Velocity Reversible Window Fan.
Copy of a photograph of a Holmes Air Fan known by applicant before applicant's invention.
Lasko copy of advertisement--these fans were on sale prior to applicant's invention.

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