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Retweet of Grathio
2015 Dec 4, 8:02
Good news! the patent on the Space Shuttle has expired. Go and build, royalty free!
https://patents.google.com/patent/US3866863A/en …
pic.twitter.com/1QliSmbnaM
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Good news! the patent on the Space Shuttle has
expired. Go and build, royalty free! 
Some rights reserved