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RX Patent: RX-8
Piano Action
Improvement in Mode of Fitting the Hammer-Heads of Piano-Fortes
Patentee:
John Mackay - Boston, MA

USPTO Classifications:
84/254

Tool Categories:
trade specific : music instrument maker

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Thomas P. Jones
Linton Thorn

Patent Dates:
Granted: Apr. 18, 1839

Reissue Information:
Reissue of 5,189X (Aug. 14, 1828)

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Description:
RX patents are reissues of X patents that were destroyed in the Dec. 1836 patent office fire.

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