Duerkopp Adler 271 - Page 2

Following Patents and Registered Utility Models apply:
Status March 1994
DE - 41 15 520 DE - 87 05 550
DE - 41 05 563 JP - 1 933 346
JP - HEI - 4 - 32044 DE - 41 38 402
DE - 40 04 892 JP - HEI - 4 - 312432