US PATENT SUBCLASS 152 / 313-- .~.~.~.~.~ Sponge rubber

US PATENT SUBCLASS 152 / 313
.~.~.~.~.~ Sponge rubber

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

151	DF	TIRES, RESILIENT {14}
246	DF	.~ Cushion {4}
310	DF	.~.~ Casing enclosed core {1}
311	DF	.~.~.~ Separate core {1}
312	DF	.~.~.~.~ Removable {5}
313		.~.~.~.~.~ Sponge rubber

DEFINITION

Classification: 152/313

The removable separate enclosed core is sponge rubber.