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| Patents for Perfection Mortising Machine Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,356,394 | Oct. 19, 1920 | G.E. Norris | Mortising-machine | portable timber mortisers | |
| 1,464,682 | Aug. 14, 1923 | G.E. Norris | Vending machine | ||