| Cited in | Search | Type: | Patent literature | Publication No.: | GB1303716
[X] [X] 1,7-12 * page 1, line 77 - page 3, line 18; figures 1-4; claim 2 * | Type: | Patent literature | Publication No.: | BE524413
[X] [X] 1,2 * the whole document * | Type: | Patent literature | Publication No.: | DE389587
[A] (VACLAV OTOKAR DEYL et al.) [A] 1 * the whole document * | Type: | Patent literature | Publication No.: | NL8002575
[A] (WILLEM MELIS et al.) [A] 1 * page 4 - page 5; figure - * |