US PATENT SUBCLASS 52 / 54
.~ Central discrete ridge member

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

45  DF  RAILROAD CAR ROOF CONSTRUCTION {4}
54.~ Central discrete ridge member {1}
55  DF  .~.~> Relatively movable covering sections

DEFINITION

Classification: 52/54

(under subclass 45) Structure comprising a central cover sustaining member elevated above the edges and extending longitudinally of the roof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

47, for a carline and longitudinal ridge construction.