Electricity: conductors and insulators – Conduits – cables or conductors – Preformed panel circuit arrangement
Patent
1994-10-12
1996-04-30
Thomas, Laura
Electricity: conductors and insulators
Conduits, cables or conductors
Preformed panel circuit arrangement
174250, 174255, 361748, H05K 102
Patent
active
055127126
ABSTRACT:
Improved printed wiring boards are disclosed, in which indications showing the types of electronic devices to be mounted on the printed wiring boards and other information are provided within the insulation cover coating and are protected from getting accidentally scraped off. Alignment marks are also well protected so that users can always rely on the alignment marks. The surfaces of the printed wiring boards are smooth and flat, which prevents stagnation trouble in a feeding operation of the printed wiring boards as well as helps provide a securer mounting of electronic devices. An improved wiring freedom is also provided.
REFERENCES:
patent: 3697668 (1972-10-01), Campbell
patent: 4682271 (1987-07-01), Yamada
patent: 4940627 (1990-07-01), Kittler Jr. et al.
patent: 5093183 (1992-03-01), Strunka
patent: 5214566 (1993-05-01), Dupre et al.
Demura Akihiro
Enomoto Ryo
Iwata Yutaka
Nakamura Akihito
Ibiden Co. Ltd.
Thomas Laura
Weissburg Steven J.
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