US PATENT SUBCLASS 968 / 808
.~.~ By a body falling a prefixed distance in air or in a viscous material [G04F 1/08]


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

801  DD  APPARATUS WHICH CAN BE SET AND STARTED TO MEASURE OFF PREDETERMINED OR ADJUSTABLY FIXED TIME INTERVALS WITHOUT DRIVING MECHANISMS, E.G., EGG TIMER, ETC. (electric time and time-program switches H01H 43/00) [G04F 1/00] {3}
804  DD  .~ By movement or acceleration due to gravity [G04F 1/04] {2}
808.~.~ By a body falling a prefixed distance in air or in a viscous material [G04F 1/08]