Number | Date | Country | Kind |
---|---|---|---|
197 09 206 | Mar 1997 | DEX |
This application is a 371 of PCT/EP98/00288 filed on Jan. 20, 1998.
Filing Document | Filing Date | Country | Kind | 102e Date | 371c Date |
---|---|---|---|---|---|
PCT/EP98/00288 | 1/20/1998 | 7/26/1999 | 7/26/1999 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO98/39570 | 9/11/1998 |
Number | Name | Date | Kind |
---|---|---|---|
4725204 | Powell | Feb 1988 | |
5092740 | Yamamura | Mar 1992 | |
5356275 | Brenner et al. | Oct 1994 | |
5482443 | Bez | Jan 1996 | |
5547347 | Sethna et al. | Aug 1996 | |
5573387 | Holbrook | Nov 1996 |
Number | Date | Country |
---|---|---|
63105294 | Oct 1988 | EPX |
5231369 | Jul 1993 | EPX |
597730 | May 1994 | EPX |
731274 | Sep 1996 | EPX |
3520634 | Dec 1986 | DEX |
37 10782 | Oct 1988 | DEX |
92 15786 | Sep 1992 | WOX |
Entry |
---|
Patent Abstracts of Japan, vol. 012, No. 346 (M-742)Sep. 16, 1988 & JP 63 105294A (Hitachi Ltd; others: 01), May 10, 1988. |
Wutz et al., "Theorie und Praxis der Vakuumtchnik," Verlag Friedr., Vieweg & Sohn, Braunschweig/Wiesbaden, 3. uberarb. Aufl., 1986, S. 134-139 No Translation. |
Fussel, "Trockenlaudfende Vakuumpumpen in der chemischen Industrie", In: Vakuum in der Praxis, 1994, Nr. 2, S.85-88; No Translation. |