I'm posting below a few pages from the Vervloet catalogs (which can be downloaded from the Vervloet website). The products range from Louis XIV (who is due for a revival any time now) to Beaux Arts to Art Déco to contemporary classics.
Very impressive design and workmanship, on a par with P. E. Guerin, I'd say. I've always wanted Cremone bolts on my French windows. I'm keeping this web address handy . . . but first I need the windows.
Interested parties can reach David Manrique at D.Manrique@vervloet.com.