The Konica F (not sure if that was the model designation in the USA) definitely was the first with the Copal Square shutter, which basically became the standard shutter design for SLRs. The Konica Autoreflex was the first autoexposure camera of any kind, I believe (and it permitted switching between full frame and half frame). Konica also had the first integral autowind camera, the FS (and, while not an SLR, the first autofocus camera, the C35AF).