[Leica] Happy 70th Birthday M Mount!

[Frank Filippone]

 Seventy years ago (February 10, 1950) Hugo Wehrenpfennig filed the patent
for the Leica M-mount. The patent for the M-bayonet ("Bajonettvorrichtung
für die lösbare Verbindung zweier Kamerateile") was registered by Ernst
Leitz GmbH at the German patent office on 10 February 1950 and published on
23 October 1952. Hugo Wehrenfennig was credited with the invention. The
Leica M mount was officially introduced at the 1954 Photokina show with the
Leica M3 as its first camera (Wikipedia
<https://en.wikipedia.org/wiki/Leica_M_mount>).


Frank Filippone
BMWRed735i at gmail.com