Number | Date | Country | Kind |
---|---|---|---|
2-126444 | May 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4060088 | Morrison, Jr. et al. | Nov 1977 | |
4936301 | Rexroth et al. | Jun 1990 |
Number | Date | Country |
---|---|---|
3642077 | Jun 1988 | DEX |
Entry |
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Reidenbach et al., "Eine neue Methode . . . ", Biomed. Techn., 23 (1978), pp. 71-74. |