Benutzer:Andreas Plank/Hilfe – Gemeinfreie Patente (Public Domain)

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Warum das Rad noch einmal erfinden, wenn es schon erfunden ist? Hier eine Sammlung zur Suche von Patenten, die Gemeinfrei sind:

Anbieter Internetadresse
Google Patentsuche über Statussuche „GRANT“, z.B. „Nikola Tesla“
https://patents.google.com/?inventor=Nikola+Tesla&status=GRANT

NASA
Open Source
Artikel
https://opensource.com/article/17/1/making-us-patent-system-useful-again
Suche
http://freeip.mtu.edu/home/