US PATENT SUBCLASS 278 / 72
.~ D-head type

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

52  DF  THILL COUPLINGS {10}
72.~ D-head type {2}
73  DF  .~.~> Cooperating hook {1}
77  DF  .~.~> Plural-part eye {1}

DEFINITION

Classification: 278/72

D-head type:

(under subclass 52) Subject matter wherein one of the elements of the coupling is D-shaped.