The brand of crank doesn't limit the choice of chainrings.
The Bolt Circle Diameter( distance between two mounting holes, skipping one in between) is your number
144,151 are common old sizes.
Find a Sutherlands Manual for Mechanics and the information on this ( and lots of other stuff) will be at your fingertips.
Pedals are another story.
French threaded pedals are not real common.
Almost any modern replacement crank( or vintage stuff in the US) will be BSC(British Standard thread).
Depending on your location, most larger cities have a bicycle co op or used bicycle shop. That would be a place to start.
Also, look for the oldest bicycle store in your area. They likely have the knowledge or can direct you.
rusty