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"this seemed to be well known knowledge"
Then anyone bothered about it should have no difficulty producing evidence of same in the form of a publication or evidence of public use in the US of some kind.
Incidentally, the famous "XOR patent" mentioned earlier in the thread expired years ago.
Then anyone bothered about it should have no difficulty producing evidence of same in the form of a publication or evidence of public use in the US of some kind.
Incidentally, the famous "XOR patent" mentioned earlier in the thread expired years ago.