US PATENT SUBCLASS 377 / 32
.~.~.~ Power failure

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

27  DF  SYSTEMS {21}
28  DF  .~ Identifying or correcting improper counter operation (e.g., error checking, monitoring; preventing or correcting improper counter operation) {2}
30  DF  .~.~ Preventing an inaccurate count as a result of an external condition {2}
32.~.~.~ Power failure

DEFINITION

Classification: 377/32

Power failure:

(under subclass 30) Subject matter where the external condition is the power supply for the counter.

SEE OR SEARCH CLASS

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

142+, for miscellaneous synchronizing reset circuits which may be power supply responsive.

340, Communications: Electrical,

635+, for indicating systems responsive to the condition of electrical apparatus.

365, Static Information Storage and Retrieval,

226+, for preventing loss of stored information as a result of power interruption. 368, Horology: Time Measuring Systems or Devices,

66, for monitoring the power level of a timepiece.