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classification
classification
patents are classified (organized) in the U.S. by a system using a 3 digit class and a 3 digit subclass to describe every similar grouping of patent art. A single invention may be described by multiple classification codes.
-- see Manual of Patent Classification
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Index:
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H
I
J
K
L
M
N
O
P
R
S
T
U
W
X
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