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Patents for Inventions - Abridgments of Specifications Relating to Roads and Ways. A.D. 1619-1866 (Paperback)

Patents for Inventions - Abridgements of Specifications Relating to Photography (Paperback)

Patents for Invention - Abridgements of Specifications Relating to Printing, Including Therein the Production of Copies on All Kinds of Materials, (Excepting Felted and Textile Fabrics, ) by Means of Types, Stereotype, Blocks, Plates, Stone, Dies, Stencil P (Paperback)

Catalogue of the Library of the Patent Office... Volume 2 (Paperback)

Aeronautics - An Abridgement of Aeronautical Specifications Filed at the Patent Office from A.D. 1815 to A.D. 1891. by Griffith Brewer and Patrick Y. Alexander (Paperback)

Subject List Of Works Of Reference, Biography, Bibliography, The Auxiliary Historical Sciences, Etc., In The Library Of The Patent Office (Paperback)

Subject List Of Works Of Reference, Biography, Bibliography, The Auxiliary Historical Sciences, Etc., In The Library Of The Patent Office (Hardcover)

A ronautics - An Abridgment of A ronautical Specifications Filed at the Patent Office from A.D. 1815 (Paperback)

A ronautics - An Abridgment of A ronautical Specifications Filed at the Patent Office from A.D. 1815 (Hardcover)

Catalogue of the Library of the Patent Office - 2 (Paperback)

Reports of Patent, Design, Trade Mark, and Other Cases; Volume 17 (Paperback)

... Reference Index of Patents of Invention, from March 2, 1617 (14 James I.) to October 1, 1852 (16 Victoriae). - Pointing Out the Office in Which Each Enrolled Specification of a Patent May Be Consulted, and the Books Containing Notices of Specifications (Hardcover)

Patents for Inventions - Abridgements of Specifications Relating to Agriculture. Division III. Agricultural and Traction Engines. A, Parts 1618-1866 (Paperback)

... Reference Index of Patents of Invention, from March 2, 1617 (14 James I.) to October 1, 1852 (16 Victoriae). - Pointing Out the Office in Which Each Enrolled Specification of a Patent May Be Consulted, and the Books Containing Notices of Specifications (Paperback)

Chronological and Descriptive Index of Patents Applied for and Patents Granted, Containing the Abridgements of Provisional and Complete Specifications (Paperback)

Chronological and Descriptive Index of Patents Applied for and Patents Granted, Containing the Abridgements of Provisional and Complete Specifications (Hardcover)

The Commissioners Of Patents' Journal (Paperback)

Patents For Inventions - Abridgments Of Specifications: Class (Paperback)

Patents For Inventions - Abridgments Of Specifications: Class (Paperback)

Patents For Inventions - Abridgments Of Specifications: Class (Paperback)

Patents For Inventions - Abridgments Of Specifications: Class (Paperback)

Catalogue of the Library of the Great Seal Patent Office - Printed by Order of the Commissioners of Patents (Paperback)

Specification of James Watt - Steam Engines (Paperback)