US PATENT SUBCLASS 135 / 30
.~.~ T-head and socket

Current as of: June, 1999
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135 /   HD   TENT, CANOPY, UMBRELLA, OR CANE

15.1  DF  UMBRELLA {17}
29  DF  .~ Rib and stretcher joints {1}
30.~.~ T-head and socket

DEFINITION

Classification: 135/30

(under subclass 29) Devices comprising joints in which a slot or other opening in the runner or notch receives and retains a T-head mounted upon the inner end of the stretcher or rib, while permitting motion of the stretcher or rib along the length of the slot. Modifications of the meeting parts to form the joint are also included.