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Class Information
Number: 380/58
Name: Cryptography > Selectively movable element having code characters > Rotatable > Characters on peripheral surface (e.g., cylinder section)
Description: Subject matter wherein the character bearing surface is on an edge surface of a movable element.










Patents under this class:

Patent Number Title Of Patent Date Issued
8532289 Fast computation of a single coefficient in an inverse polynomial Sep. 10, 2013
8443458 Method and device for detecting the opening of a cover enclosing the device May. 14, 2013
8362875 Secure system for non-covert user authentication and identification Jan. 29, 2013
7715554 Prime number determining method May. 11, 2010
6907124 Optical encryption and decryption method and system Jun. 14, 2005
5055851 Vehicle location system Oct. 8, 1991
5024495 Computer software protection, by optical effects Jun. 18, 1991
4972477 Encoder/decoder Nov. 20, 1990
4560164 Toy puzzle Dec. 24, 1985











 
 
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