clavi
196
the Jumping Minute function is actually not an innovation from JLC
the Jumping Minute feature is not something new in chronographs.
For example, the rather old and common Valjoux 72 and Lemania 321 feature this function.
Therefore it can't be something that JLC saved for Lange use only, as you can find it on many other chronographs predating Lange re-introduction.
However, it is a good thing that JLC uses this feature, as I have always found wandering minute counters prety much useless as you can't really read the exact time recorded efficiently (see for example Breguet type XX lemania equiped with wandering second: it is very difficult to tell exactly which minute you are in)