TY - GEN AU - Tassy, J., ID - 439 KW - Patents. KW - Intellectual property. KW - PATENTS : SCOPE AND MAINTENANCE OF RIGHTS : WORKING T1 - A patent licensee's obligation to exploit his licence :an extraordinary aspect of French Law / TI - A patent licensee's obligation to exploit his licence :an extraordinary aspect of French Law / VL - 1981 Vol 3 No 2 pages 45-48 ER -