How to Obtain a Patent, Copp & Co. Patent Attorneys, Washington, D.C.(Half-tone Engraving: How to Obtain a Patent, Copp & Co. Patent Attorneys, Washington, D.C.)James Henry Moser |
€ 118.61
Includes 13.5% VAT
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Undated · Halftone engraving in black ink on paper
· Picture ID: 1287289
Smithsonian Institution, Gift of Louis Cohen |
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