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| Patents for Charles A. Knighten | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,485,857 | Dec. 04, 1984 | C.A. Knighten, B.D. Norlie | Door processing machine | specialty woodworking machines | |
| 5,119,855 | Jun. 09, 1992 | C.A. Knighten, B.D. Norlie | Face frame component machining system | routing machines | |
| 6,227,793 | May 08, 2001 | C.A. Knighten | Door transport system | specialty woodworking machines | |