TY - GEN AU - Wegner, Harold C., AU - Mueller, Frithjof E. ID - 8533 KW - Patents. KW - Trademarks. KW - PATENTS : PATENTABILITY : PATENT EQUIVALENCE T1 - German chemical equivalents / TI - German chemical equivalents / VL - 1976 Vol 58 No 1 pages 60-65 ER -