There are several other Helicopter / VTOL patents that Haviland H. Platt obtained, going back before Platt-LePage Aircraft, and several years after. (As well as a number of other non aviation patents too)
With all the knowledge and experience you have accumulated on the subject of Platt-Lepage and related companies/programs, I wonder if you have considered doing a book on the subject, or perhaps a series of articles for a magazine? That would be awesome, because this is definitely a part of aviation history that is little documented and that must not be forgotten!