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Patents Granted on 1972-03-21 | |||||
Number | Date | Patentee | Title | Type | |
CA-895,668 | Mar. 21, 1972 | F.E. Allen | Bandmill arbor tilting mechanism | band sawmills | |
3,650,336 | Mar. 21, 1972 | H.P. Koehler | Power driven device | impact chisels and drills |