Geometrical instruments – Miscellaneous – Light direction
Reexamination Certificate
2005-04-05
2005-04-05
Fulton, Christopher W. (Department: 2859)
Geometrical instruments
Miscellaneous
Light direction
C033S0010DD, C033S290000
Reexamination Certificate
active
06874238
ABSTRACT:
A survey monument comprises a conventional water hydrant with survey indicia or markings attached thereto. The survey indicia can be carried for example on a plate mounted on a flange bolt or attached to the operating nut of the hydrant. These survey monuments can be expanded upon and/or maintained in co-ordination with the expansion and maintenance of a municipality's water supply system. The hydrants can also be utilized in connection with any geographical information system to provide known reference points. The hydrants can also be utilized in connection with GPS devices to assist in localizing, initializing and calibrating the same.
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Results of USPTO database search dated Oct. 11, 1999.
Ontario Ministry of Natural Resources—Horizontal Control Monument Record—Monument No. 001673120.
Geomatics Canada—Geodetic Survey Div.—Vertical Monument Record Benchmark No. 71U541, Dec. 12, 1998.
Fulton Christopher W.
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