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| 003 | OSt | ||
| 005 | 20190814091301.0 | ||
| 007 | t| | ||
| 008 | 190702s1931 xxu||||| |||| 00| 0 d | ||
| 110 | 1 | _aUnited States Department of Commerce <Washington> / Patent Office | |
| 245 | 0 | 0 | _aGeneral information concerning patents |
| 264 | 1 |
_aWashington: _bGov. Print., _c1931 |
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| 300 | _a21 S. | ||
| 650 |
_aPatentwesen _93556 |
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| 650 |
_aUSA _94716 |
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| 500 | _a7.526, 10.092 | ||
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