Guide to patents, trade marks and designs, by Oscar Carlberg.
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| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
Chicago, New York [etc.]
Singer, Ehlert, Stern & Carlberg
[1947]
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| Subjects: | |
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| Item Description: | Loose-leaf. To be kept up to date by the insertion of correction sheets. cf. Foreword. |
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| Physical Description: | 1 v. 25 cm. |