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Patent
   D539918
Priority
Jul 19 2005
Filed
Jul 19 2005
Issued
Apr 03 2007
Expiry
Apr 03 2021
Inventors
Denmon, Ri…
Assg.orig
Assg.curr
Entity
unknown
Referenced by
4
References
12
Maint.:
n/a
The ornamental design for a manhole guard, as shown and described.

FIG. 1 is a top and side perspective of my new manhole guard;

FIG. 2 is a side elevation; and,

FIG. 3 is a bottom plan view.
INVENTORS:

Denmon, Richard F.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
11708690, Jun 24 2020 Silt Saver, Inc.; SILT-SAVER, INC Temporary sediment retention assembly
8277646, Jun 22 2009 System and method for temporary storm water drainage control
D570492, Mar 06 2006 Manhole guard
D752246, Mar 14 2014 Prefabricated building part
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
1370166,
2393126,
3426659,
3722730,
4048766, Sep 04 1975 Intercontinental Plastics Mfg. Co. Closure lid assembly for protective housings
4121390, May 27 1977 Moduloc Concrete Products (London) Ltd. Pre-cast units for sewer construction
4973191, Aug 23 1985 Manhole cover
5295557, Feb 18 1992 Utility construction safety and work platform
5843306, Apr 16 1997 Temporary silt guard for storm water collection basin inlet
6004457, Apr 16 1997 Temporary silt guard for sewer inlet
D245104, Jan 30 1976 Burton B., Jones Underground utility housing
D453225, Mar 28 2001 Domed manhole protector
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