Will it sell? how to determine if your invention is profitably marketable (before wasting money on a patent)

Detaylı Bibliyografya
Yazar: White, James E.
Materyal Türü: Kitap
Dil:English
Baskı/Yayın Bilgisi: Okemos, Mich. J.E. White & Associates 2000.
Konular: