US PATENT SUBCLASS 267 / 129
.~.~.~ Seal

Current as of: June, 1999
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267 /   HD   SPRING DEVICES

113  DF  FLUID {5}
118  DF  .~ Expansible-contractible chamber device {5}
124  DF  .~.~ Piston {4}
129.~.~.~ Seal

DEFINITION

Classification: 267/129

(under subclass 124) Spring device including significant means for eliminating the passage of fluid between the periphery of the piston and the interior cylinder wall structure.