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Manual of Classification of Subjects of Invention of the United States Patent Office
Language: en
Pages: 108
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Type: BOOK - Published: 1912 - Publisher:

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Manual of Classification of Subjects of Invention of the United States Patent Office
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Handbook on the Use of the U.S. Patent Classification System
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Manual of Classification of Patents
Language: en
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Manual of Classification of Subjects of Invention of the United States Patent Office
Language: en
Pages: 112
Authors: United States Patent And Trademark Offi
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Type: BOOK - Published: 2013-10 - Publisher: Nabu Press

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This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant mark