Ventilator for a water closet

Details Ventilator for a water closet Ventilator for a water closet

1976-09-30

1977-08-30

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2302

Patent

active

D02456214

REFERENCES:
patent: D215937 (1969-11-01), Meyer
patent: D234951 (1975-04-01), Couton
patent: D235065 (1975-05-01), Hunnicutt, Jr.
patent: 2129048 (1938-09-01), Davis
patent: 2171903 (1939-09-01), Aubin
patent: 3849808 (1974-11-01), Olson et al.
patent: 3857119 (1974-12-01), Hunnicutt, Jr.

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