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The Slingerland Snare Drum

Patent number: 2166733
Filing date: May 22, 1937
Issue date: Jul 18, 1939
Inventor: Henry H. Slingerland


The Slingerland Snare Drum

Patent number: 2274435
Filing date: Jan 24, 1941
Issue date: Feb 24, 1942
Inventor: Henry H. Slingerland


The Slingerland Counterhoop

Patent number: 2,779,227
Filing date:: Feb 28, 1955
Issue date: Jan 29, 1957
Inventor: Henry H. Slingerland


The Slingerland Counterhoop

Patent number: 3576149
Filing date:: Apr 3,, 1969
Issue date: Apr 2, 1971

Inventor: Henry H. Slingerland



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