Classification bulletin of the United States Patent Office.
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| Format: | Government Document eBook |
| Language: | English |
| Published: |
[Washington] :
[s.n.],
1944.
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| Online Access: | Electronic resource (PDF) |
| Item Description: | Containing the classification of the Class 123 internal-combustion engines revised by the Classification Division of the United States Patent Office, and including all changes through Order Number 3857, dated Sept. 27, 1944. |
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| Physical Description: | 1 online resource (20 pages), digital, PDF file |