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Class Information
Number: 70/336
Name: Locks > Operating mechanism > Key
Description: Subject matter wherein the impeding structure is overcome or operated by internal mechanism.

Sub-classes under this class:

Class Number	Class Name	Patents
70/390	False or picking key trapping	7
70/388	Key ejecting	16
70/389	Key-removal preventing	101
70/337	Multiple keys	73
70/391	Operating elements	5
70/382	Permutation	19
70/387	Push or pull key operation	50
70/344	Single key	4
70/416	Tampering prevention or attack defeating	173
70/386	With ball or roller	128

Patents under this class:

Patent Number	Title Of Patent	Date Issued
7021852	Article holder	Apr. 4, 2006
6851292	Lock-key system	Feb. 8, 2005
6473022	Mechanical and remote control key	Oct. 29, 2002
6331812	Programmable electronic locking device	Dec. 18, 2001
5541571	Hand-held transmitter for the remote control of various vehicle systems	Jul. 30, 1996
4976373	Suspendable hinged lockable lid storage box	Dec. 11, 1990
4200227	Key assembly for electronic system	Apr. 29, 1980
4176782	Contactless digital key switch	Dec. 4, 1979