TY  - BOOK
AU  - Haddan, Reginald
TI  - Patents for inventions
U1  - 608.7 HAD 
PY  - 1937///
CY  - London
PB  - Sir Isaac Pitman & Sons
KW  - Intellectual property
KW  - Patent systems
KW  - Innovation and legal rights
N1  - Includes index
ER  -