US PATENT SUBCLASS 249 / 17
.~.~ Chimney

Current as of: June, 1999
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249 /   HD   STATIC MOLDS

1  DF  IN SITU CONSTRUCTION ENGINEERING TYPE OR BUILDING TYPE-MOLD OR FORM {4}
13  DF  .~ Forming building structure {5}
17.~.~ Chimney

DEFINITION

Classification: 249/17

(under subclass 13) Apparatus for forming a chimney.

SEE OR SEARCH THIS CLASS, SUBCLASS:

144+, for container like mold for conduit-type product.

SEE OR SEARCH CLASS

52, Static Structures (e.g., Buildings),

218, for formed flue with gaseous fluid directing feature. 264, Plastic and Nonmetallic Article Shaping or Treating: Processes,

32, for process of forming a vertical cylindrical structure.

454, Ventilation,

3+, for formed chimneys of general utility.