US PATENT SUBCLASS 52 / 781
.~.~ Frame member fabricated from thin walled material

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

474  DF  FACER HELD BY STIFFENER-TYPE FRAME {11}
764  DF  .~ Facer attached between exposed frame members {11}
781.~.~ Frame member fabricated from thin walled material

DEFINITION

Classification: 52/781

Frame member fabricated from thin-walled material:

(under subclass 780) Structure wherein the frame member is made of thin-walled material either angularly or curvilinearly shaped (e.g., an I-beam, the vertical web and horizontal flanges of which are relatively thin compared to their width, or sustainers formed of sheet metal or thin-walled metal extrusions).