Post by Uncle Buddy on Aug 13, 2017 2:53:18 GMT -8
According to this page (link below), it looks like we're out of luck for coming up with what would be a real treasure trove if it existed: stacks and stacks of rejected patent applications. I wouldn't want to read through the rejected air power applications but I would want to search for the applications of specific inventors. These guys had a tendency of running to the newspaper the minute they got their application into the mail and stating that they were protected by a patent. Then usually the application was rejected and the invention was abandoned or fell into the hands of financiers who the inventor had become indebted to.
One possible exception is that apparently only the US had the habit of putting rejected applications into a secret place (the trashcan) where they would never be read or looked at or indexed or put up on the internet. So if the same inventor applied for a patent in another country, maybe there is a way to research rejected applications in Canada or Great Britain for example. The European patent website is awesome.