US PATENT SUBCLASS 377 / 3
.~ Counting on an object, areas having alternating physical properties (e.g., counting lines on grid, teeth on gear, windings on coil)

Current as of: June, 1999
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377 /   HD   ELECTRICAL PULSE COUNTERS, PULSE DIVIDERS, OR SHIFT REGISTERS: CIRCUITS AND SYSTEMS

1  DF  APPLICATIONS {11}
3.~ Counting on an object, areas having alternating physical properties (e.g., counting lines on grid, teeth on gear, windings on coil)

DEFINITION

Classification: 377/3

Counting, on an object, areas having alternating physical properties (e.g., counting lines on grid, teeth on gear, windings on coil):

(under subclass 1) Subject matter comprising means to count, on an object, areas or lines having alternate physical properties.

SEE OR SEARCH CLASS

356, Optics: Measuring and Testing,

242.1, for significant optical testing or measuring structure including means to count threads.