United States. Patent Office & ProQuest (Firm). (1831). Patents for useful inventions. Letter from the Secretary of State, transmitting a list of patents granted for useful Inventions during the year 1830. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Patent Office and ProQuest (Firm). Patents for Useful Inventions. Letter from the Secretary of State, Transmitting a List of Patents Granted for Useful Inventions During the Year 1830. Washington: [publisher not identified], 1831.
MLA (9th ed.) CitationUnited States. Patent Office and ProQuest (Firm). Patents for Useful Inventions. Letter from the Secretary of State, Transmitting a List of Patents Granted for Useful Inventions During the Year 1830. [publisher not identified], 1831.
Warning: These citations may not always be 100% accurate.