The United States Patent Law

United States Patent Law.

[Instructions How to Obtain Letters Patent for New Inventions.]

Plantation Pagents

[Illustrated by E. Boyd Smith.]

Plantation Pagents.

The Classification of Patents

Classification of Patents.

List of Canadian Patents From the Beginning of the Patent Office, June, 1824, to the 31st of August, 1872

List of Canadian Patents From the Beginning of the Patent Office, June, 1824, to the 31st of August, 1872.

Results of Meteorological Observations, Made Under the Direction of the United States Patent Office and the Smithsonian Institution From the Year 1854 to 1859, Inclusive, Being a Report of the Commissioner of Patents Made at the First Session of the Thirty-sixth Congress. Vol. I-II: Pt.1.

A Medical Student's Letters to His Parents

Medical Student's Letters to His Parents.