US PATENT SUBCLASS 70 / 273
.~.~.~ Continuously operating once initiated
Current as of:
June, 1999
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70 /
HD
LOCKS
266
DF
OPERATING MECHANISM
{6}
267
DF
.~ Predetermined time interval controlled {3}
272
DF
.~.~ Clockwork control {1}
273
.~.~.~ Continuously operating once initiated {1}
274
DF
.~.~.~.~
> Emergency release
DEFINITION
Classification: 70/273
(under subclass 272) Devices which operate continuously once initiated.
