Patents for inventions : Abridgements of specifications relating to writing instruments and materials.
Saved in:
| 企业作者: | |
|---|---|
| 格式: | 图书 |
| 语言: | English |
| 出版: |
Lond. :
Office of the Commissioners of Patents for Inventions,
1869, 1882.
|
| 主题: |
书本目录:
- Pt.1, A.D. 1635-1866. Pt.2, A.D. 1867-1876.