US PATENT SUBCLASS 368 / 91
.~.~ With gravity-actuated timer

Current as of: June, 1999
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368 /   HD   HOROLOGY: TIME MEASURING SYSTEMS OR DEVICES

89  DF  TIME INTERVAL {6}
90  DF  .~ Parking meter type {2}
91.~.~ With gravity-actuated timer

DEFINITION

Classification: 368/91

With gravity actuated timer:

(under subclass 90) Subject matter wherein the time indicator is controlled by the flow of a fluid or granular material due to gravity or by the movement of a solid body due to gravity.

SEE OR SEARCH THIS CLASS, SUBCLASS:

93, for chronometric gravity-actuated timers, per se.