A digest of patents, issued by the United States, including the years 1839, 1840, and 1841 :
published by Act of Congress under the superintendence of the Commissioner of Patents, Henry L. Ellsworth to which is added the present laws relating to patents.

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Corporate Author
United States. Patent Office.
Related Names
Ellsworth, Henry Leavitt, 1791-1858
Language(s)
English
Published
Washington, D.C. : Printed by William Greer, 1842.
Subjects
Patent laws and legislation.
Patents > United States
Note
Includes index.
Physical Description
xx, 148 p. ; 23 cm.
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