| Book | Requires cookie* | ||
| 1 | Title: | Additional improvement patents, 1837-1861 | |
| Creator: | United States National Archives and Records Service. | ||
| Paulauskas, James A., 1929- | |||
| Publication: | National Archives and Records Service, General Services Administration, Washington,1977. | ||
| Notes: | Includes indexes. | ||
| Call #: | Pam. U241 | ||
| Extent: | vii, 22 p. ; 27 cm. | ||
| Subjects: | Patents -- United States | Patent extensions -- United States | ||
| View Full Catalog Record | |||
