US PATENT SUBCLASS 52 / 204.72
.~.~ With mechanical fastener for securing strips

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

204.5  DF  WINDOW OR WINDOW SASH, SILL, MULLION, OR GLAZING {13}
204.71  DF  .~ U-shaped channel formed of separate strips overlapping pane edge, front, and back {1}
204.72.~.~ With mechanical fastener for securing strips

DEFINITION

Classification: 52/204.72

With mechanical fastener for securing strips:

(under subclass 204.71) Channel in which a bolt, screw, etc., is used to fix the members to the sash.