US PATENT SUBCLASS 380 / 57
.~ Rotatable
Current as of:
June, 1999
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380 /
HD
CRYPTOGRAPHY
56
DF
SELECTIVELY MOVABLE ELEMENT HAVING CODE CHARACTERS
{1}
57
.~ Rotatable {1}
58
DF
.~.~
> Characters on peripheral surface (e.g., cylinder section)
DEFINITION
Classification: 380/57
Rotatable:
(under subclass 56) Subject matter wherein adjacent movable character bearing surfaces have a circular motion component.