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Patent
   D398049
Priority
Mar 12 1996
Filed
Dec 30 1996
Issued
Sep 08 1998
Expiry
Sep 08 2012
Inventors
Willis, Je…
Assg.orig
Assg.curr
Entity
unknown
Referenced by
8
References
5
Maint.:
n/a
The ornamental design for a duct for a toilet bowl ventilation system, as shown and described.

FIG. 1 is a perspective view of a duct for a toilet bowl ventilation system showing my new design from the top, one end, and one side; and,

FIG. 2 is a perspective view thereof shown from the bottom, and end and side opposite that shown in FIG. 1.
INVENTORS:

Willis, Jerry F.

THIS PATENT IS REFERENCED BY THESE PATENTS:
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11123672, Sep 15 2014 Donaldson Company, Inc. Filter cartridges; air cleaner assemblies; housings; features; components; and, methods
7591301, Sep 13 2005 Johnson Matthey Public Limited Company Low-cost high-temperature heat exchanger
7594326, Sep 13 2005 Johnson Matthey Public Limited Company Method for making a low-cost high-temperature heat exchanger
7987527, Dec 14 2004 Toilet ventilation device
8047272, Sep 13 2005 Johnson Matthey Public Limited Company High-temperature heat exchanger
D560276, Sep 13 2005 Johnson Matthey Public Limited Company Heat exchanger
D579101, May 30 2007 Johnson Matthey Public Limited Company Heat exchanger
D637277, May 07 2010 Carbo-Tech Incorporated Carbon dioxide transfer connection holder
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
3153794,
3849808,
D269117, Dec 18 1980 Ventilation conduit for toilets
D271329, Aug 01 1980 LDI MFG CO , INC , Fresh air duct for a kitchen exhaust system
D307568, Nov 04 1987 Vehicle roof mounted air reversing unit
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