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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2203/00
Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
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H05K2203/30
Details of processes not otherwise provided for in H05K2203/01 - H05K2203/17
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H05K2203/308
Sacrificial means, e.g. for temporarily filling a space for making a via or a cavity or for making rigid-flexible PCBs
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