How to make money from ideas and inventions /

Ижил төстэй зүйлс

• Inventing & patenting sourcebook : how to sell and protect your ideas /
  -н: 358219 Levy, Richard C., зэрэг
  Хэвлэсэн: (1992)
• Inventing and patenting sourcebook : how to sell and protect your ideas /
  -н: 358219 Levy, Richard C., зэрэг
  Хэвлэсэн: (1990)
• The creative engineer : the art of inventing /
  -н: 389935 Kock, Winston E.
  Хэвлэсэн: (1978)
• Patenting and marketing your invention /
  -н: 364919 Rivkin, Bernard
  Хэвлэсэн: (1986)
• What every engineer should know about inventing /
  -н: 457773 Middendorf, William H.
  Хэвлэсэн: (1981)