US PATENT SUBCLASS 368 / 311
.~.~ Of opening spring

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

276  DF  CASES {17}
309  DF  .~ With front or back details {3}
311.~.~ Of opening spring {1}
312  DF  .~.~.~> Cover connection

DEFINITION

Classification: 368/311

Of opening spring:

(under subclass 309) Subject matter relating to spring means by which the front or back of the case is opened.