Number | Name | Date | Kind |
---|---|---|---|
2465319 | Whinfield et al. | Mar 1949 | |
2720502 | Caldwell | Oct 1955 | |
2727881 | Caldwell et al. | Dec 1955 | |
2822348 | Haslam | Feb 1958 | |
3047539 | Pengilly | Jul 1962 | |
3671487 | Abolins | Jun 1972 | |
3953394 | Fox et al. | Apr 1976 | |
4128526 | Borman | Dec 1978 | |
4578329 | Holsappel | Mar 1986 | |
4595647 | Spanjer | Jun 1986 | |
4636544 | Hepp | Jan 1987 | |
4816374 | Lecomte | Mar 1989 | |
5063137 | Kiyonari et al. | Nov 1991 | |
5489639 | Faber et al. | Feb 1996 |
Number | Date | Country |
---|---|---|
0 111 357 B2 | Jun 1990 | EP |
0 675 001 A1 | Oct 1995 | EP |
0 676 442 | Oct 1995 | EP |
WO 94 12352 | Jun 1994 | WO |
Entry |
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T. Kilp, Laser Marking of Plastics , Annu. Tech. Conf. Soc. Plast. Eng. (1991), 49th, 1901-1903. |