Electricity: conductors and insulators – Conduits – cables or conductors – Single duct conduits
Patent
1987-03-31
1988-12-13
Nimmo, Morris H.
Electricity: conductors and insulators
Conduits, cables or conductors
Single duct conduits
29831, 361416, H05K 100, H05K 300
Patent
active
047912383
ABSTRACT:
A high-density wired circuit board obtained by providing an auxiliary grid at the position of centroid of a main grid and by employing wiring in the inclined direction mainly instead of wiring in the XY directions mainly can make the space between wires and through-holes large without narrowing a wiring pitch.
REFERENCES:
patent: 3674602 (1972-07-01), Keogh et al.
patent: 3674914 (1972-07-01), Burr
patent: 3895181 (1975-07-01), La Grange et al.
patent: 3969816 (1976-07-01), Swengel, Sr. et al.
patent: 4298770 (1981-11-01), Nishihara et al.
patent: 4554405 (1985-11-01), Varker
Fukutomi Naoki
Iwasaki Yorio
Kanno Masao
Kojima Fujio
Nakamura Hidehiro
Hitachi Chemical Company Ltd.
Nimmo Morris H.
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