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Patents for S. Heald & Sons | |||||
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Number | Title | Classification(s) | |||
54,432 | Improvement in head-blocks to sawmills | 83/728 | |||
RE2,924 | Improvement in head-blocks for saw-mills | 83/721 | |||
103,871 | Improvement in head-blocks for saw-mills | 83/713, 83/719 | |||
330,112 | Hay Tedder | 56/372 | |||
500,128 | Crimping Machine | 12/54.4 |