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100 | 1 | _aBlackman, Michael | |
245 | 0 | 0 | _aUS patents in 1856 |
650 |
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650 |
_aPatent _93565 |
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650 |
_aPatentwesen _93556 |
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650 |
_aTechnikgeschichte _94361 |
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773 | 0 |
_aWPI. 28(2006),3,251-257. _wz_WPI |
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999 |
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