KBK update for Wednesday, 9th October

Further rummaging has led to the rediscovery of an ITW patent that helps differentiate two of the early ferrite core types. Re-reading the patents page has led to matching up the patent that goes with the double-action ferrite core switches in the HP 9845 workstation keyboard. Understanding of Licon/Cortron/ITW’s ferrite core product range is getting slowly clearer.

View within the updates for 2019

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