Patent classifications
H
ELECTRICITY
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H05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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H05K
PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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3/00
Apparatus or processes for manufacturing printed circuits
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H05K3/40
Forming printed elements for providing electric connections to or between printed circuits
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H05K3/42
Plated through-holes; or plated via connections
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H05K3/425
characterised by the sequence of steps for plating the through-holes or via connections in relation to the conductive pattern
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H05K3/427
initial plating of through-holes in metal-clad substrates
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