Home
|
FAQ
Search:
Advanced
|
Person
|
Company
|
Type
|
Class
Login
Quick search:
Patent number:
Patent Date:
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)
Patent Pictures:
Report data errors or omissions
X-Patents
USPTO Images
USPTO Info
Description:
RX patents are reissues of X patents that were destroyed in the Dec. 1836 patent office fire.
Copyright © 2002-2018 - DATAMP