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Patent
D493209
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Priority
Oct 29 2003
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Filed
Oct 29 2003
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Issued
Jul 20 2004
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Expiry
Jul 20 2018
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Assg.orig
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Entity
unknown
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3
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12
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n/a
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The ornamental design for a flap valve, as shown and described.
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FIG. 1 is a plan vew of a flap valve showing my new design;
FIG. 2 is a side elevation view thereof;
FIG. 3 is a vertical sectional view thereof;
FIG. 4 is a top perspective view of the flap valve with its flap in a closed position; and,
FIG. 5 is a bottom perspective view thereof.
Wade, Rodney George
Patent |
Priority |
Assignee |
Title |
3541945, |
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3628213, |
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3814542, |
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4157113, |
Apr 27 1976 |
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Ventilation and temperature control apparatus |
5046408, |
Jul 13 1990 |
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Hooded exhaust vent |
5547422, |
Apr 28 1995 |
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Accessory vent duct outlet protector auxiliary |
6132626, |
Aug 19 1995 |
Maguire, Boss |
Liquid filter |
D297382, |
Feb 16 1988 |
American Sporting Goods Corporation |
Shoe upper |
D397431, |
Jul 18 1997 |
Deflecto Corporation |
Hooded exhaust vent |
D399948, |
Dec 15 1997 |
JPMORGAN CHASE BANY |
Combined canopy, motor housing, switch housing, blade irons and light kit unit for a ceiling fan |
D417905, |
Feb 18 1998 |
Corrupipe CC |
Relief valve |
53220, |
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