TY  - BOOK
AU  - MacCracken, Calvin D
TI  - A Handbook for Inventors: how to protect, patent, finance, develop, manufacture,
SN  - 684179067
U1  - 608 
PY  - 1983///
CY  - New York
PB  - Charles Scribner's Sons
KW  - Inventions
ER  -