Additional Marques recently found:
SOWEL, BAURAIT-DELAGE, MANUFRANCE, IDEALE-DUNLOP : "rain, mud, n' do not have a catch on the saddles " ideal-dunlop". same aspect that leather" (babelfish translation from early Ideale Catalog) I'm guessing a rubber compond top and just listing for interest. And NOREX (not to be confused with the peviously listed NORTEX, shown in the Ideale Catalog).
That brings it to 36 Brands to date. Cycling components must have been profitable in France back then.
Jay Dubiel
Halifax, VA USA