Guide To The Search Department Of The Patent Office Library
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Additional Improvement Patents, 1837-1861
| Author | : United States. National Archives and Records Service |
| Publisher | : |
| Total Pages | : 42 |
| Release | : 1977 |
| Genre | : Patent extensions |
| ISBN | : |
Name and Date Patents
| Author | : |
| Publisher | : |
| Total Pages | : 412 |
| Release | : 1999 |
| Genre | : Patents |
| ISBN | : |
Photocopy of a typescript index of early unnumbered patents. The entries in the document are arranged chronologically with the "X" patent number provided. Patents that were recovered after the Patent Office fire of 1836 are hand-recorded with class and subclass numbers in the right-hand column.
The Uses of Libraries
| Author | : Ernest Albert Baker |
| Publisher | : |
| Total Pages | : 336 |
| Release | : 1927 |
| Genre | : Academic libraries |
| ISBN | : |
