A Handbook for Inventors how to protect, patent, finance, develop, manufacture,
MacCracken, Calvin D
A Handbook for Inventors how to protect, patent, finance, develop, manufacture, - New York Charles Scribner's Sons 1983 - 211
684179067
Inventions
608 / MAH
A Handbook for Inventors how to protect, patent, finance, develop, manufacture, - New York Charles Scribner's Sons 1983 - 211
684179067
Inventions
608 / MAH