Number | Date | Country | Kind |
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100 22 499 | May 2000 | DE |
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1834309 | Harney | Dec 1931 | A |
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3616035 | Baskerville, Jr. et al. | Oct 1971 | A |
3797074 | Zafiroglu | Mar 1974 | A |
3862472 | Norton et al. | Jan 1975 | A |
3886629 | Nakai et al. | Jun 1975 | A |
4153978 | Bangert | May 1979 | A |
4375447 | Chung | Mar 1983 | A |
4383349 | Marshall | May 1983 | A |
4712277 | Gustavsson | Dec 1987 | A |
5044052 | Hertel et al. | Sep 1991 | A |
6297201 | Jonasson et al. | Aug 2001 | B1 |
Number | Date | Country |
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1 510 395 | Mar 1972 | DE |
26 29 901 | Feb 1977 | DE |
4006 180 | Sep 1990 | DE |
43 19 445 | Dec 1994 | DE |
197 06 404 | Aug 1998 | DE |
0 515 939 | Dec 1992 | EP |
Entry |
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Patent Abstracts of Japan, Publication No. 62231032, Publication Date Oct. 9, 1987, 1 page. |
European Patent Office Search Report dated Aug. 17, 2001, 4 pages. |