US PATENT SUBCLASS 968 / 612
.~ Mechanisms continuously running to relate the operation(s) to the time of day [G04C 23/14]


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968 /   HD   HOROLOGY

605  DD  CLOCKS WITH ATTACHED OR BUILT-IN MEANS OPERATING ANY DEVICE AT PRESELECTED TIMES OR AFTER PRESELECTED TIME INTERVALS (if restricted to producing acoustic time signals by electrical means subclass 580; mechanical alarm clocks subclass 231; apparatus which can be set and started to measure off predetermined intervals subclass 815; time or time-program switches which automatically terminate their operation after the program is completed H01H 43/00) [G04C 23/00] {3}
612.~ Mechanisms continuously running to relate the operation(s) to the time of day [G04C 23/14] {4}
613  DD  .~.~> Acting only at one preselected time or during one adjustable time- interval [G04C 23/16]
614  DD  .~.~> For operating one device at a number of different times [G04C 23/18] {2}
618  DD  .~.~> For operating a number of devices at different times [G04C 23/26] {2}
622  DD  .~.~> With provision for automatic modification of the program, e.g., on Sunday, etc. [G04C 23/34] {4}