US PATENT SUBCLASS 294 / 86.19
.~.~.~ Spring release means

Current as of: June, 1999
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294 /   HD   HANDLING: HAND AND HOIST-LINE IMPLEMENTS

86.4  DF  GRAPPLE {18}
86.1  DF  .~ Well type {10}
86.17  DF  .~.~ With releasing means {4}
86.19.~.~.~ Spring release means

DEFINITION

Classification: 294/86.19

(under subclass 86.17) Grapples having a spring means for moving the grappling means to a released position.