US PATENT SUBCLASS 187 / 331
.~.~ With position lock therefor

Current as of: June, 1999
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187 /   HD   ELEVATOR, INDUSTRIAL LIFT TRUCK, OR STATIONARY LIFT FOR VEHICLE

313  DF  WITH BARRIER FOR REGULATING ACCESS TO LOAD SUPPORT {4}
325  DF  .~ Including barrier mounted at landing {5}
331.~.~ With position lock therefor

DEFINITION

Classification: 187/331

With position lock therefor:

(under subclass 325) Subject matter provided with means having the sole function of restricting or preventing the movement of the path blocking means from a location where it allows passage of the load to a location where it prevents passage of the load.