How to make money from ideas and inventions /

Eitemau Tebyg

• Inventing & patenting sourcebook : how to sell and protect your ideas /
  gan: 358219 Levy, Richard C., et al.
  Cyhoeddwyd: (1992)
• Inventing and patenting sourcebook : how to sell and protect your ideas /
  gan: 358219 Levy, Richard C., et al.
  Cyhoeddwyd: (1990)
• The creative engineer : the art of inventing /
  gan: 389935 Kock, Winston E.
  Cyhoeddwyd: (1978)
• What every engineer should know about inventing /
  gan: 457773 Middendorf, William H.
  Cyhoeddwyd: (1981)
• Preparation of Applications for Inventions Created in the Nuclear, Biological and Chemical Protection Troops
  gan: M. V. Supotnitskiy
  Cyhoeddwyd: (2023-07-01)