US PATENT SUBCLASS 368 / 141
.~.~ With protection means

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

139  DF  MECHANICAL TIME BASE {1}
140  DF  .~ Mainspring {7}
141.~.~ With protection means

DEFINITION

Classification: 368/141

With protection means:

(under subclass 140) Subject matter including means to prevent damage to the mainspring area of the timepiece.

SEE OR SEARCH THIS CLASS, SUBCLASS:

286+, for timepiece cases with protection means.

326, for balance staff-protection means.