Multi-Annular Snare Drums
Almost all of the American Percussion Snare Drums are  constructed using  American Percussion's patented  multi-annular ring construction. 

​Drums shells can be custom ordered from a choice of available wood in a range of diameters, depths and thicknesses.  Order complete drums or just shells.

Math Ias
Ken Lovelett hi, very cool look indeed, and your hardware are interesting too (different types of muffling, lug, mount and even second snare). I don't understand though, are you making them industrially or are you just designing and patenting