US PATENT SUBCLASS 968 / 561
.~.~ Setting the time-indicating means, e.g., by controlling the frequency or by changing the drive of the separate clocks by using an auxiliary motor, etc. [G04C 15/00H2]


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

553  DD  CLOCKS DRIVEN BY SYNCHRONOUS MOTORS [G04C 15/00] {4}
560  DD  .~ Synchronous clock systems, e.g., provided with radiolink or using transmission of alternating current via existing power distribution lines, etc. [G04C 15/00H] {2}
561.~.~ Setting the time-indicating means, e.g., by controlling the frequency or by changing the drive of the separate clocks by using an auxiliary motor, etc. [G04C 15/00H2]