其他書名 | A Practical and Legal Business Guide for Developing, Patenting, Perfecting, Manufacturing and Operating Inventions. Compiled from a Life of Experience. What to Do and what Not to Do ... |
出版 | C.J. Johnson, 1887 |
URL | http://books.google.com.hk/books?id=bkZHAQAAMAAJ&hl=&source=gbs_api |
EBook | FULL_PUBLIC_DOMAIN |