How to Make Patent Drawings : Save Thousands of Dollars and Do It With a Camera and Computer!
Jack Lo
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Format: eBook (EPUB)
Patent It Yourself : Your Step-by-Step Guide to Filing at the U.S. Patent Office
David Pressman
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Format: eBook (EPUB)
How to Make Patent Drawings : A "Patent It Yourself" Companion
Jack Lo
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Format: eBook (EPUB)
