Archived posting to the Leica Users Group, 1997/10/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Frank Filippone wrote: > > The subject concerns the use of LTM on newly made lenses like the Ricoh 28 > MM lens. > > Marc Small offered: > "The patent on the LTM expired in 1952. The patent on the M bayonet mount > expired in 1973." > > Is it possble that there is an International patent that is blocking the > independent manufacture of M mount lenses by companies like Ricoh? > > Marc and any lawyer types out there, what is the situation with foreign > patent time scales? > > Frank Frank, Making it in LTM seems like a sound marketing decision to me. If only made in M mount then you exclude any LTM sales. In LTM + an adapter you get both markets. Making both LTM and M mounts just causes an inventory hassle. Dennis - -- Experience is a tough teacher. It gives the test before the lesson. - -unknown