 
                 Patent Grant
 Patent Grant
                     6622331
 6622331
                    | Number | Date | Country | Kind | 
|---|---|---|---|
| 2000-241024 | Aug 2000 | JP | |
| 2000-200614 | Jul 2000 | JP | |
| 2001-077299 | Mar 2001 | JP | |
| 2001-000742 | Feb 2001 | JP | 
| Number | Name | Date | Kind | 
|---|---|---|---|
| 1406276 | Novitzky | Feb 1922 | A | 
| 1989597 | Johnston | Jan 1935 | A | 
| 2025173 | Meyer | Dec 1935 | A | 
| 2105395 | Baas | Jan 1938 | A | 
| 2270936 | Doering et al. | Jan 1942 | A | 
| 3229314 | Hyams | Jan 1966 | A | 
| 3276053 | McKesson | Oct 1966 | A | 
| 3965515 | Moberly | Jun 1976 | A | 
| 4185347 | Yang | Jan 1980 | A | 
| 4254524 | Okui | Mar 1981 | A | 
| 4953715 | Celli | Sep 1990 | A | 
| 5224607 | Koresko | Jul 1993 | A | 
| 5294007 | Edmondson | Mar 1994 | A | 
| 5423435 | Pollard et al. | Jun 1995 | A | 
| 5446936 | Barger | Sep 1995 | A | 
| 6119871 | Mengel | Sep 2000 | A | 
| 6266837 | Nord | Jul 2001 | B1 | 
| Number | Date | Country | 
|---|---|---|
| 72 15 879 | Jul 1972 | DE | 
| 38 37 820 | May 1990 | DE | 
| 3837820 | May 1990 | DE | 
| 41 16 599 | Nov 1992 | DE | 
| WO 9706717 | Feb 1997 | WO | 
| Entry | 
|---|
| Japanese Patent Laid-Open No. 9-10089 (Jan. 14, 1997) * English translation. | 
| Japanese Patent Laid-Open No. 10-113497 (May 6, 1998) * English translation. |