Ventilation unit

Details Ventilation unit Ventilation unit

1996-06-11

1998-02-17

Lichtenstein, Lisa

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

D23386, 2304

Patent

active

D03909433

REFERENCES:
patent: 3672291 (1972-06-01), Kujawa, Jr.
patent: 3839950 (1974-10-01), Kelly et al.
patent: 4452129 (1984-06-01), Kelley et al.
Pages From Product Brochure, Salem Vent International, Inc., Illustrating Prior Art Ventilation Unit.

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