US PATENT SUBCLASS 405 / 149
.~ Cut and cover

Current as of: June, 1999
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405 /   HD   HYDRAULIC AND EARTH ENGINEERING

132  DF  UNDERGROUND PASSAGEWAY, E.G., TUNNEL {6}
149.~ Cut and cover

DEFINITION

Classification: 405/149

Cut and cover:

(under subclass 132) Method or apparatus relating to a tunnel constructed by excavating a trench into the earth, forming the tunnel cross section in the trench, and covering the trench.

SEE OR SEARCH THIS CLASS, SUBCLASS:

282+, for temporary trench shoring.