$20.00 – $85.00
Invention by Henri Selmar – founding member of French Selmar Company. Patent relates to manufacture of valves.
Patent for the counter weight for balancing the trombone while playing.
Gebr. Alexander’s patent. First fully constructed double horn with completely independent F and B flat sides.
William S Haynes’ patent to correct a flaw that had troubled flute-makers up until that time.
Invention by Henri Selmar – founding member of French Selmar Company. Increased the lower range of instrument.