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US Patent: 76,389
Improvement in flutes
Patentee:
Theodore Berteling (exact or similar names) - New York, NY

USPTO Classifications:
84/380R, 84/384

Tool Categories:
musical instruments

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Gustave Dieterich
Theodore Tusche
Patent Dates:
Granted: Apr. 07, 1868

Patent Pictures:
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