US PATENT SUBCLASS 237 / 13
PLANTS
Current as of: June, 1999
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DEFINITION
Classification: 237/13
(under the class definition) Systems combining means for generating heat at one place and distributing it to other buildings, including mains or conduits having no other apparent use than with these systems.
SEE OR SEARCH CLASS
137, Fluid Handling, for fluid distributing and handling systems not otherwise provided for, see particularly
236.1, for fluid distributing systems including geos:graphic features and subclasses 356+ for such systems having as a support a structural member immovably joined to the ground.
138, Pipes and Tubular Conduits, for conduits and underground ways adapted for use in heating plants and otherwise.
