US PATENT SUBCLASS 152 / 49
.~.~.~.~ Plural

Current as of: June, 1999
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152 /   HD   RESILIENT TIRES AND WHEELS

1  DF  SPRING WHEELS {3}
17  DF  .~ Spring encircling rigid annulus {10}
40  DF  .~.~ Rubber spring {4}
47  DF  .~.~.~ Annular {4}
49.~.~.~.~ Plural

DEFINITION

Classification: 152/49

In a spring wheel having a spring encircling rigid annulus supported by an annular rubber spring, there are more than one of such springs.