US PATENT SUBCLASS 135 / 29
.~ Rib and stretcher joints

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

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

DEFINITION

Classification: 135/29

(under subclass 15.1) Devices relating to the mechanisms by which ribs and stretchers are connected at their inner ends to the notches and runners, respectively, with such modifications of the meeting parts as contribute to the joint.