US PATENT SUBCLASS 160 / 228
.~.~.~ Tongue, bead, bolt, or dog into groove or slot

Current as of: June, 1999
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160 /   HD   FLEXIBLE OR PORTABLE CLOSURE, PARTITION, OR PANEL

130  DF  PLURAL STRIP, SLAT, OR PANEL TYPE {11}
218  DF  .~ Movably interconnected {4}
222  DF  .~.~ Slidably interconnected {5}
228.~.~.~ Tongue, bead, bolt, or dog into groove or slot

DEFINITION

Classification: 160/228

(under subclass 222) Devices in which the slidable connection is comprised by a protrusion on one element entering a groove or slot in a second element of the unit. The protrusion may be of any form and may be either integral or attached.