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Unseen switches

A surprising amount of switch types are known from literature, but have never been seen, or have never been discovered in a keyboard.


Never seen

The following switch types are known from patents or catalogues, but have never been observed or depicted in a photograph:

Many more types are known from patents. Types known only from patents are not guaranteed to have ever gone into production.

Not discovered in a keyboard

The following switch types have yet to be seen in a keyboard: