Electrical resistors – Mechanically variable – Resistance value varied by removing or adding material
Patent
1982-06-11
1985-05-28
Albritton, C. L.
Electrical resistors
Mechanically variable
Resistance value varied by removing or adding material
338185, H01C 1000, H01C 1046
Patent
active
045203407
ABSTRACT:
The present invention relates to a camera with the main circuit boards and the sub-circuit boards comprising electrical circuit constructions constituted with resistance-conductor laminated constructions so designed that the insulating support on which a resistance material layer and a conductor material layer are laminated are processed by means of the selective etching and so on in such a manner that the resistance members are constituted with the resistance material layer while the conductor parts such as wirings, terminals and so on are constituted with the conductor material layer.
REFERENCES:
patent: 3111635 (1963-11-01), Ploke
patent: 4032881 (1977-06-01), Singleton
Aizawa Hiroshi
Omi Junji
Shimizu Masami
Uchidoi Masanori
Watanabe Kunio
Albritton C. L.
Canon Kabushiki Kaisha
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