Electronic components, namely, assembled or non-assembled printed circuit boards, multichip modules and substrates therefor

ELECTRONIC COMPONENTS, IN PARTICULAR ASSEMBLED AND BARE PRINTED CIRCUIT BOARDS, MULTI-CHIP MODULES AND SUBSTRATES THEREFORE, SINGLE-CHIP AND MULTI-CHIP ELECTRONIC PACKAGES COMPRISED OF BALL-GRID ARRAYS AND MICRO BALL-GRID ARRAYS, AND INTERPOSERS AND CHIP CARRIERS THEREFOR