PHILIP JOSEPH OSTENDORF
Architects in Miami, FL

5133238, Jul 28, 1992

Aug 2, 1990

7/561524

Philip J. Ostendorf - Key Biscayne FL

G10D 710

84387R

A musical instrument which may be used to play a complete major scale without coordinated mouth and finger operations has a single mouthpiece, an outer tubing assembly or horn connected to the mouthpiece and terminating in a bell, and an inner tubing assembly or horn mounted concentrically within the outer horn. The inner horn has an open, upstream end located inside the outer horn and either an open or a closed downstream end projecting outwardly from the belled end of the outer horn. If open, the downstream end of the inner horn is either belled or tubular. The inner horn preferably is in the form of a straight tube which is closed at its outer end by a cap but may be opened or belled.

4885971, Dec 12, 1989

Jan 19, 1989

7/300038

Philip J. Ostendorf - Key Biscayne FL

G10D 710

84387

A musical instrument which may be used to play a complete major scale without coordinated mouth and finger operations is formed as two or three horns having a single, shared mouthpiece, and pitched one or two half tones apart. One or both the of the horns may have one or two ports to enable one to play a complete major scale and other scale notes.