Yeah I've seen that about the 50's, not sure what the difference was.
Either a bounce house or trampoline.
Yeah I wasn't gonna be an ass an post that but... Yeah.
Also Seadoo is a subsidiary of what was Bombardier, now BRP, a Canadian company that has been building PWCs since 1969. And they were never from as far as I can tell, or have ever heard from being in the industry, owned by Hasbro.
No offense Andy.
I guessed bounce house.
Bombardier also made the first ski doo... Which failed. That's the company that I was talking about, the toy company , which I believe was Hasboro, sold the rights to Bombardier. The patent was established in 69 or 68... Let me check.
I'm not trying to dicredit you or your grandfather. It just doesn't seem to pan out from what I can find.
No biggie, I knew there's be questions. I'm not sure if the issue happened after the patent or before.
I don't have all the details, but everything I found is its to late to do anything.
I know we had the original up until the mid 80 s before it finally rotted out. My grandpa built it out of plywood because nobody would give him fiberglass and he couldn't afford fiberglass.