US PATENT SUBCLASS 455 / 411-- .~.~ Privacy, lock-out, or authentication

US PATENT SUBCLASS 455 / 411
.~.~ Privacy, lock-out, or authentication

Current as of: June, 1999
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455 /	HD	TELECOMMUNICATIONS

403	DF	RADIOTELEPHONE SYSTEM {12}
410	DF	.~ Security or fraud prevention {1}
411		.~.~ Privacy, lock-out, or authentication

DEFINITION

Classification: 455/411

Privacy, lock-out, or authentication:

(under subclass 410) Subject matter which permits use of the radiotelephone system only by an authorized subscriber or transceiver.

SEE OR SEARCH CLASS

379, Telephonic Communications,

161, for exclusion or priority in a multi-line or key substation system, subclasses 168+ for lockout in an intercom or single line system, subclass 184 for lockout in a polystation or party line system, and subclasses 194+ for lockout or double use signaling of a landline telephone.