It looks like they fuck over inventors.
Most of these appear to be for government projects such as with the Department of Defense and the NSA.
Sometimes, a regular invention outside of government contacts gets labeled with this and the government don’t pay for it. The inventor isn’t allowed to talk about it so they get fucked out of any income.
Manjushri@piefed.social 1 week ago
Not taking that bet. From the linked wikipedia page.
You may be sure that there are times when they did more than consider it.