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Patents for Arthur E. De Koning | |||||
Number | Date | Patentee | Title | Type | |
1,800,450 | Apr. 14, 1931 | O.K. Hill | Cut-off sawing machine | circular crosscut saws | |
2,007,563 | Jul. 09, 1935 | A.E. De Koning | Mechanical movement | circular crosscut saws | |
2,016,799 | Oct. 08, 1935 | A.E. De Koning | Trimmer saw | circular crosscut saws |