Subject-matter index of patents for inventions issued by U.S. Patent Office, from 1790 to 1873
Subtitle: inclusive, Volume I-III
By: comp. and pub. under the direction of M.D. Leggett, Commissioner of Patents.
Contributors: Legget, M. D.
Publisher: s.n.]
Published: 1874
Place of publication: [Washington?
Format: Microform
Subjects: Patents -- United States -- Indexes.
Genres: Indexes.
Table of contents: title: I. A-G; title: II. H-P; title: III. Q-Z.