Alton Lloyd Brand. Appl. states copyright not claimed on mechanical features involved.
Simplex fingering slide rule for flute and piccolo.
R577157. Simplex fingering slide rule for flute and piccolo. By Alton Lloyd Brand. Appl. states copyright not claimed on mechanical features involved. © 20Feb47; AA46437. Alton Lloyd Brand (A); 17May74; R577157.
Alton Lloyd Brand|A