KBK update for Monday, 28th October

Re-examination of unidentified Maxi-Switch keyboard 3101-090-02 reveals that the switches have a patent number ending in “10,060”. US patent 3710060 fits the switch description well … but it is a Bunker Ramo patent! That was one switch type that looked like Maxi-Switch originated it, but possibly not. However, this does appear to confirm that the keyboard, and PCB codes beginning “31”, are Series 3100 as expected.

This raises the possibility that Maxi-Switch licenced the design of “vintage linear” (possibly Series 6300) off SMK instead of copying it without permission.

View within the updates for 2019

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