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100 | 1 | _aWherry, Timothy Lee | |
245 | 0 | 0 | _aA survey of missing patents at the United States Patent and Trademark Office |
650 |
_aUSA _94716 |
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650 |
_aPatent _93565 |
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650 |
_aPatentamt _93359 |
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773 | 0 |
_aWPI. 15(1993),3,147-149. _wz_WPI |
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999 |
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