Reasons for opposition to certain proposed changes in the patent laws : submitted to the Committees on Patents of the U.S. Senate and House of Representatives

MLA

Reasons for opposition to certain proposed changes in the patent laws : submitted to the Committees on Patents of the U.S. Senate and House of Representatives. Washington : H. Polkinhorn, 1870.

APA

(1870). Reasons for opposition to certain proposed changes in the patent laws : submitted to the Committees on Patents of the U.S. Senate and House of Representatives. Washington : H. Polkinhorn.

Chicago

Reasons for opposition to certain proposed changes in the patent laws : submitted to the Committees on Patents of the U.S. Senate and House of Representatives. Washington : H. Polkinhorn, 1870.