US PATENT SUBCLASS 40 / 449
.~.~ Magnetic
Current as of:
June, 1999
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40 /
HD
CARD, PICTURE, OR SIGN EXHIBITING
446
DF
CHANGING EXHIBITOR
{25}
447
DF
.~ Alphanumeric (monogram) device {4}
449
.~.~ Magnetic
DEFINITION
Classification: 40/449
Magnetic:
(under subclass 447) Exhibitor wherein the elements are activated by magnetic means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
621, for letters with magnetic attaching means.
SEE OR SEARCH CLASS
345, Computer Graphics Processing, Operator Interface
Processing, and Selective Visual Display Systems,
111, for similar display systems with specific selective electrical control means.
434, Education and Demonstration, 430, for plans and charts having magnetic features.