US PATENT SUBCLASS 70 / 177
.~.~.~.~ Externally mounted locking device

Current as of: June, 1999
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70 /   HD   LOCKS

57  DF  SPECIAL APPLICATION {7}
174  DF  .~ For control and machine elements {8}
175  DF  .~.~ Valve {1}
176  DF  .~.~.~ Locked stationary {3}
177.~.~.~.~ Externally mounted locking device {1}
178  DF  .~.~.~.~.~> Valve encasing

DEFINITION

Classification: 70/177

(under subclass 176) Devices comprising an external device brought into suitable engagement with a part of the valve.