Duct for a toilet bowl ventilation system

Details Duct for a toilet bowl ventilation system Duct for a toilet bowl ventilation system

1996-12-30

1998-09-08

Baynham, Holly

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

2399

Patent

active

D03980499

REFERENCES:
patent: D269117 (1983-05-01), Sherrard
patent: D271329 (1983-11-01), Welsh
patent: D307568 (1990-05-01), Lopez
patent: 3153794 (1964-10-01), Hill
patent: 3849808 (1974-11-01), Olson et al.

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