US PATENT SUBCLASS 278 / 84
.~ Spring

Current as of: June, 1999
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278 /   HD   LAND VEHICLES: ANIMAL DRAFT APPLIANCES

81  DF  THILL-SUPPORTS {4}
84.~ Spring

DEFINITION

Classification: 278/84

Spring:

(under subclass 81) Subject matter wherein the support is a spring which resiliently supports the thills.