US PATENT SUBCLASS 968 / 588
.~ Producing the signals at adjustable fixed times [G04C 21/16]


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



968 /   HD   HOROLOGY

580  DD  PRODUCING ACOUSTIC TIME SIGNALS BY ELECTRICAL MEANS (for mechanical clocks or watches subclasses 225 and 243) [G04C 21/00] {3}
588.~ Producing the signals at adjustable fixed times [G04C 21/16] {7}
589  DD  .~.~> By mechanically unlocking an electromechanical vibrator, e.g., actuated by the leakage flux of the electric driving means, etc. [G04C 21/18] {1}
591  DD  .~.~> By closing a contact to ring an electromechanical alarm [G04C 21/20] {4}
596  DD  .~.~> By closing a contact to put into action electro-acoustic means, e.g., awakening by music, etc. [G04C 21/28]
597  DD  .~.~> With provision for a number of operations at different times, e.g., ringing the bells in a school, etc. [G04C 21/30] {3}
602  DD  .~.~> Devices on watches or similar portable timepieces [G04C 21/34]
603  DD  .~.~> Signal-repeating devices [G04C 21/36]
604  DD  .~.~> Adjusting the duration of signals [G04C 21/38]