US PATENT SUBCLASS 123 / 53.4
.~.~.~ Two-stroke cycle

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

52.1  DF  MULTIPLE CYLINDER {7}
53.1  DF  .~ Cylinder offset from crankshaft axis {3}
53.3  DF  .~.~ Cylinders opposite {1}
53.4.~.~.~ Two-stroke cycle

DEFINITION

Classification: 123/53.4

Two-stroke cycle:

(under subclass 53.3) Multiple cylinder engine wherein the pistons in the working cylinders operate on a two-stroke cycle.