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| US4622975 | 27. Sept. 1982 | 18. Nov. 1986 | Minnesota Mining and Manufacturing Company | Ear canal electrode |
| US4674511 | 9. Mai 1984 | 23. Juni 1987 | American Hospital Supply Corporation | Medical electrode |
| US4706682 | 9. Apr. 1987 | 17. Nov. 1987 | Minnesota Mining and Manufacturing Company | External ear canal electrode to be placed proximate the tympanic membrane |
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| US4838273 | 22. Juni 1987 | 13. Juni 1989 | Baxter International Inc. | Medical electrode |
| US4979511 | 3. Nov. 1989 | 25. Dez. 1990 | Cyberonics, Inc. | Strain relief tether for implantable electrode |
| US5062426 | 26. Nov. 1990 | 5. Nov. 1991 | EMS Products, Inc. | Fetal heart monitor leg plate electrode |
| US5097835 | 9. Apr. 1990 | 24. März 1992 | Ad-Tech Medical Instrument Corporation | Subdural electrode with improved lead connection |
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| USD326716 | 22. Febr. 1990 | 2. Juni 1992 | Mortara Instrument | Medical cable |
