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Authors (Last name first) (1-4 of 4)
Singer, B. (Berthold), 1860-
1
E-book
1909

Copyright laws of the world


Singer, B. (Berthold), 1860- author.

Chicago : Published by B. Singer, July, 1909

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2
E-book
1911

Patent and trade mark laws of the world


Singer, B. (Berthold), 1860-



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3
E-book
1924

Patent laws of the world


Singer, B. (Berthold), 1860- compiler.
Fourth edition
[Hammond, Indiana] : W.B. Conkey Company, 1924

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4
E-book
1907

Patents, trademarks, designs, copyrights


Singer, B. (Berthold), 1860-
2d ed. ..


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