US PATENT SUBCLASS 368 / 62
CHRONOLOGICAL

Current as of: June, 1999
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368 /   HD   HOROLOGY: TIME MEASURING SYSTEMS OR DEVICES

62CHRONOLOGICAL {12}
63  DF  .~> Phonetic (e.g., talking clock)
64  DF  .~> With supplemental power source
65  DF  .~> With fluidic actuation means
66  DF  .~> With power monitor
67  DF  .~> With auxiliary illumination for display
68  DF  .~> With intensity control of display
69  DF  .~> With manually actuated display {1}
71  DF  .~> With simultaneous time indicating means {2}
76  DF  .~> With mechanical or electromechanical driven display {4}
82  DF  .~> With electro-optical display {2}
85  DF  .~> With pulse transforming means {1}
88  DF  .~> With significant casing or mounting support structure

DEFINITION

Classification: 368/62

CHRONOLOGICAL:

(under the class definition) Subject matter relating to timepieces which repeat an observable process periodically to indicate a measure of time of indefinite continuous duration by regular division, and which contain (a) a time-indicator, and (b) an energy source, or (c) a time base, or (d) a coupling means between a time base and the time-indicator.

(1) Note. Electrical clocks using plug-in AC as the time base are included in this and indented subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

89+, for timepieces which measure elapsed time events of either known or unknown duration.

SEE OR SEARCH CLASS

346, Recorders, appropriate subclasses for time measuring apparatus where the time-indicating means is a tracing, marking, or the like made by a recording instrument.