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Patents for C. B. Skinner | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 441,633 | Dec. 02, 1890 | J.B. Bennett, A.P. Boardman | Vibrator-attachment for polishing-machines | |
![]() | 441,634 | Dec. 02, 1890 | J.B. Bennett, A.P. Boardman | Polishing-machine | |
![]() | 441,635 | Dec. 02, 1890 | J.B. Bennett, A.P. Boardman | Polisher |