Subject-matter index of patents for inventions issued by the United States Patent Office from 1790 to 1873
Subtitle: inclusive ...
By: Comp. and pub. under the direction of M.D. Leggett, commissioner of patents.
Publisher: Govt. Print. Off.
Published: 1874
Place of publication: Washington
Language: eng
Subjects: Patents -- United States
Notes: Paged continuously.
Table of contents: title: I. A-G.; title: II. H-P.; title: III. Q-Z.