Though I believe Boeing, for example, may be able to retain rights to prevent others from making duplicate aircraft, such as full scale P-51 Mustangs which are 100% identical and sold as military aircraft. However, the other side of the coin is that
Boeing did not fund the design of the A-36 or P-51. The British and American governments did. Both are funded by and act on behalf of their respective peoples for defense purposes. Beyond that, these publicly funded designs have been in the public domain
for well That was a directive from Ryanover a half century. Therefore, I do not believe Boeing or any other such contractor has any right to prevent others from making/selling small plastic reinterpretations of those designs for purposes which do not
directly compete against Boeing's business of military vehicle construction.
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For full context, visit
https://www.polytechforum.com/scale/military-model-licensing-and-royalty-fees-issue-52019-.htm
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