Mackay - Piano Action, US Reissue Patent 8 of 1839
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- Mackay - Piano Action, US Reissue Patent 8 of 1839
- Publication year listed
- 1839
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- Public domain eBook
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About this book
Mackay - Piano Action, US Reissue Patent 8 of 1839
Author: John Mackay
Year: 1839
Piano Action, US Reissue Patent 8, John Mackay, Boston, Massachusetts, April 23, 1839. Document US-RE00008-I2 (formerly US-RX00008-I2) . A reissue of US Patent 5189X issued August 14, 1828. Drawings from parent patent 5189X are also included.
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