[trux]

You are certainly right, but even if the patent is already expired, it does not give the right to DARPA claiming it is their invention (as they do) and not even mentioning the original inventor in their documents. Let's aside the fact that they shamelessly grabbed a ~$3M grant for the "invention" from taxpayers' pockets. Although it seems to be pretty legal and common practice in the USA as well as in all other countries with corrupt governments (it means probably almost the entire Earth), it does not mean people should keep their mouth shut when they notice such a scam.