TY  - BOOK
AU  - Maccraken , Calvin D
TI  - A Hand Book for Inventors: How to Protect , Palent , Finance , Develop , Manufacture &
SN  - 0-684-17906-7
U1  - 608 
PY  - 1983///
CY  - New York
PB  - Charles Scribner's Sons
KW  - Invention & Palents
ER  -