TY  - BOOK
AU  - Hayward, P A
TI  - Hayward's patent cases 1600-1883 : a compilation of the English patent cases for those years
U1  - 346.730486 HAY 
PY  - 1987///
CY  - Abingdon, Oxon
PB  - Professional Books Limited
KW  - Patent law
ER  -