TY  - BOOK
ED  - Government of India, the Patents Office 
TI  - Patents for Inventions
U1  - 346.0486 21st ed.
PY  - 1963///
CY  - Calcutta
PB  - Manager of Publications
KW  - Medical and Surgical Appliances, Chemical Process
N1  - Abridgements of Specifications
4,001-50,000
ER  -