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| Patents for Steven L. Christophersen | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,489,498 | Dec. 25, 1984 | S.L. Christophersen | Bracket Qualifier Device | ||
| 4,512,222 | Apr. 23, 1985 | S.L. Christophersen | Loosening Tool for Tie Rod Sleeves | ||