That is just amazing to me. Now that I think of it, that's why all these companies can make exact replica parts. With the patent number and date and everything. I guess I always thought that family members or private parties owned the rights to items like this. But in the end, nobody does? These days, exact replicas are a big problem, but they didn't think of that back then! I'm sure Edison didn't think over 100 years later his phonographs would still be fairly common, nor did he think he'd have a problem with everybody making reproductions.