US PATENT SUBCLASS 33 / 40
.~.~ Set shift

Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

18.1  DF  SCRIBER {10}
32.1  DF  .~ Straight-line {7}
40.~.~ Set shift

DEFINITION

Classification: 33/40

(under subclass 32) Devices designed for ruling parallel lines having a positive gauge to limit the transfer of the ruling member from line to line.

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450, for straight edges employed as guides in like work.