US PATENT SUBCLASS 278 / 70
.~.~.~ Retainers

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

52  DF  THILL COUPLINGS {10}
68  DF  .~ T-head type {1}
69  DF  .~.~ Cooperating hooks {1}
70.~.~.~ Retainers {1}
71  DF  .~.~.~.~> Spring

DEFINITION

Classification: 278/70

Retainers:

(under subclass 69) Subject matter wherein retaining means is provided to maintain the "T" element in the hooks.