(under subclass 741.1) Subject matter wherein manipulation of the earth at the construction site is a requisite step (e.g., trenching, digging, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
169.1+, for a structure having a defined relationship to the earth.
SEE OR SEARCH CLASS
405, Hydraulic and Earth Engineering,
132+, for subject matter relating to tunnels and tunneling; subclasses 229+ for foundations and methods and apparatus for constructing the same; and subclasses 258+ for earth control structures and earth treatment methods.
