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| Patents for Robert N. Norlie | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,263,723 | Aug. 02, 1966 | R.N. Norlie, R.M. Sheffield | Machine and method for preparing a door and door frame for prehanging such door | routing machines | |
| 3,285,238 | Nov. 15, 1966 | R.N. Norlie | Barbecue unit | ||
| 3,301,288 | Jan. 31, 1967 | R.N. Norlie, R.M. Sheffield | Routing machine | routing machines | |