| Number | Date | Country | Kind |
|---|---|---|---|
| CH98A0004 | Apr 1998 | IT |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/IT99/00111 | WO | 00 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO99/57615 | 11/11/1999 | WO | A |
| Number | Name | Date | Kind |
|---|---|---|---|
| 1500071 | Blanke | Jul 1924 | A |
| 3696609 | Dubois | Oct 1972 | A |
| 4228644 | Watanabe et al. | Oct 1980 | A |
| 6351435 | Kronenberg et al. | Feb 2002 | B1 |
| Number | Date | Country |
|---|---|---|
| 0 652 496 | May 1995 | EP |
| 60227188 | Nov 1985 | JP |
| Entry |
|---|
| Meyers, F.H.E., “Letters: SI Time,” Engineering, vol. 28, Jul. 1969, pp. 50-51. |