Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
For questions involving expired patents.
An expired patent is an issued grant that is no longer enforceable based on the priority date, issue date and terminal disclaimers.
7 years, 8 months ago
5 years, 7 months ago