Classified Index of subjects of invention adopted in the U. S. Patent Office, March 1, 1872
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| Format: | eBook |
|---|---|
| Language: | English |
| Published: |
Washington
Government Printing Office
1872
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| Subjects: | |
| Online Access: | kostenfrei |
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| Institution: | Bavarian State Library |
| All Items of this Institution: | all items available from Bavarian State Library |
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