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I know that, here and now, getting a patent is a very long expensive process. But, my searches of the net have been coming up empty for the length of time it takes to get a patent in place in earlier times, and to get it protected internationally. Has anyone seen any websites that might help here?

Are the inventions protected sufficiently to begin negotiations with a possible buyer before the patent is finalized?

Currently, my interests are 1919 through the 1940's, in the USA and getting them recognized internationally.

Also, how would a patent for something so militarily useful that the government decides that it needs to be secret be handled then?

Patents, and the time needed to get them in place, are shaping up to be an important part of my ASB timeline.

Thanks all!
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