1. How to be a successful inventor; patentng, protecting, Mareting, and selling your invention
پدیدآورنده : Taylor, Clarence R.
کتابخانه: Central Library and Information Center of Ferdowsi University of Mashhad (Khorasan Razavi)
موضوع : ، Inventions,United States ، Patents
رده :
T
339
.
T38
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