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Alps SCB Series

SCB Series is a hypothetical name for a series of reed switches and keyboards from Alps Electric. These are now extremely rare, with the only known instance to date being Alps SCB1A163, from around 1973. US patent 3810052 “Push button switch” filed in January 1973 with a priority of January 1972 to the filing of Japanese patent S48-077374, is the only reed patent found and is fairly similar. The only known SCB example does not have the plastic reed carrier depicted in the patents.

SCF appears to be a later development of this general design: the SCF keyboard design is very similar, but the reed switch design was completely changed.