They are Scandinavian snap locks, not miquelets. Not all guns with external mainsprings are miquelets, nor do all miquelets have external mainsprings. The defining characteristic of a "true" or "french" flintlock is a vertically acting sear, while these have horizontally acting sears like a snaphaunce, miquelet, english lock, or german snaplock.
There is a two page entry and a lot of photos in Harold L Petersons "Encyclopedia of firearms" which I gather is a summary of an article by Torsten Lenk "Nordiska Snapplasvapen.En orientering" in Svenska Vapenhistoricka Sallskapets Skrifer, 1952