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| Patents Granted on 1984-12-25 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,489,498 | Dec. 25, 1984 | S.L. Christophersen | Bracket Qualifier Device | ||
| 4,489,925 | Dec. 25, 1984 | J.L. Mortoly | Equalizer clamp | clamping machines | |