Does anyone know if the patent is still active on the FWC lift panel design? I know it was originally filed in the 70s and I believe most patents expire after 25 years. Therefore I think it must be expired, but I'm guessing someone on here knows for sure.
Also on a roof lift note - has anyone seen another roof lift system that works well and is as simple as the FWC lift panels?
I am asking these questions for a custom build project that might turn into more than that.
Also on a roof lift note - has anyone seen another roof lift system that works well and is as simple as the FWC lift panels?
I am asking these questions for a custom build project that might turn into more than that.