Classification bulletin of the United States Patent Office - class 260, chemistry, carbon compounds : containing the classification definitions of the above class revised by the classification group of the United States Patent Office, to include all changes through order no. 354, dated August 14, 1963
- Författare
- United States Patent Office
- (United States Patent Office.)
- Språk
- Engelska
| Förlag | År | Ort | Om boken | ISBN |
|---|---|---|---|---|
| United States Patent Office | 1963 | USA, Washington, D. C | 116 sidor. |