TY  - BOOK
AU  - Singer,Berthold
TI  - Patent and trade mark laws of the world
AV  - K89 S5 1911 
PY  - 1911///
CY  - Chicago
PB  - [Hammond press, W. B. Conkey company]
KW  - Patent laws and legislation
KW  - Local
KW  - Trademarks
KW  - Patente de invención
KW  - Legislación
KW  - Marcas de fabricas
ER  -