RE: Copywrites, Patents, Rights???
I just don't think anyone should copy another persons research, developement and work to sell for their own personal gain without award or royalty to the original designer.
If a person copied another person's research, developement and work for his own personal use would be of the highest flattery of the original designer. But NOT to make a business for profit or personal gain from another person's hard work.
I am sure that when the original plans were published in any magazine, they were not published to be copied for a profitable interprise, but for individuals to spend the time scratch building a plane for their own personal use.
Frank