US PATENT SUBCLASS 104 / 14
.~.~.~ Pneumatic

Current as of: June, 1999
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104 /   HD   RAILWAYS

2  DF  TRACK LAYERS {11}
10  DF  .~ Tamper {3}
13  DF  .~.~ Hand tools {1}
14.~.~.~ Pneumatic

DEFINITION

Classification: 104/14

(under subclass 13) Hand tools of the pneumatic-hammer type for placing ballast around the ties.