Additional improvement patents, 1837-1861 /
Saved in:
| OCLC: | 2646330 |
|---|---|
| 企业作者: | |
| 其他作者: | |
| 语言: | English |
| 出版: |
Washington :
National Archives and Records Service, General Services Administration,
1977.
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| 丛编: | Special list (National Archives (U.S.)) ;
no. 39. |
| 主题: | |
| 格式: | Government Document Monograph Note that CRL will digitize material from the collection when copyright allows. |