US PATENT SUBCLASS 968 / 481
.~.~ Driven by electromagnetic means [G04C 3/10]


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

446  DD  ELECTROMECHANICAL CLOCKS OR WATCHES INDEPENDENT OF OTHER TIMEPIECES AND IN WHICH THE MOVEMENT IS MAINTAINED BY ELECTRIC MEANS (synchronization subclass 506) [G04C 3/00] {8}
480  DD  .~ Wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g., by a tuning fork, e.g., electrostatically, etc. [G04C 3/08] {2}
481.~.~ Driven by electromagnetic means [G04C 3/10] {2}
482  DD  .~.~.~> Constructional details [G04C 3/10B] {3}
487  DD  .~.~.~> Driving circuits [G04C 3/10C]