These records are reconstructed drawings of original patent drawings that were destroyed in a fire at the Patent Office in December 1836. In 1837 Congress passed an act that provided for the restoration of these burned records.
And now online ... The actual page title is Restored Patent Drawings, 1837–1847 but those dates refer to the original restoration project, not the the patents themselves.
And now online ... The actual page title is Restored Patent Drawings, 1837–1847 but those dates refer to the original restoration project, not the the patents themselves.