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US Patent: 73,956
Improved Pen Cleaner
Patentee:
Samuel Darling - Bangor, ME

USPTO Classifications:
15/423

Tool Categories:
trade specific : draftsman

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. L. Simpson
John E. Hall
A. M. Stone
S. J. Wagner

Patent Dates:
Granted: Feb. 04, 1868

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
Crosby, Halsted & Gould - patent attorneys

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