Number | Date | Country | Kind |
---|---|---|---|
MI93A0198 | Feb 1993 | ITX |
Number | Name | Date | Kind |
---|---|---|---|
2793235 | Jenkinson | May 1957 | |
3311544 | Riehl et al. | Mar 1967 | |
3367847 | Pierson | Feb 1968 | |
4732653 | Berg et al. | Mar 1988 |
Entry |
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Database WPI, Week 7937, Derwent Publications Ltd., London BGB, JP 54015812 (abstract). |