Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – By means advancing along terrain and guiding pipe or cable...
Reexamination Certificate
2007-04-27
2009-11-10
Lagman, Frederick L (Department: 3672)
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
By means advancing along terrain and guiding pipe or cable...
C405S183000, C405S180000
Reexamination Certificate
active
07614827
ABSTRACT:
A vibratory plow for installing a conduit below a ground surface. A portable vibrating compactor and a series of rollers provide a “seamless” finish to the ground.
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Arrowhead Center, Inc.
Jackson Justin R.
Lagman Frederick L
Peacock Deborah A.
Peacock & Myers, P.C.
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