Results for “United States. Patent Office”

Index of patents relating to electricity

United States. Patent Office

1890

Index of patents relating to electricity

United States. Patent Office

1891

Index of patents relating to electricity

United States. Patent Office

1893

Index of patents relating to electricity

United States. Patent Office

1895

Index of patents relating to electricity

United States. Patent Office

1894

Index of patents relating to electricity

United States. Patent Office

1896

Index of patents relating to electricity

United States. Patent Office

1897

Index of patents relating to electricity

United States. Patent Office

1898

Index of patents relating to electricity

United States. Patent Office

1892

Subject-matter index of patents for inventors issued by the United States Patent Office from 1790 to 1873, inclusive

United States. Patent Office

2000

Classification of subjects of invention adopted in the U.S. Patent office

United States. Patent office

1868

Roster of registered attorneys entitled to practice before U.S. Patent Office

United States. Patent Office

1898

United States statutes concerning the protection and registration of trade-marks and labels

United States. Patent Office

1892

Subject-matter index of patents for inventions issued by the United States Patent Office from 1790 to 1873

United States. Patent Office

1874

Catalogue of additions to the library of the United States Patent office

United States. Patent office. Scientific library. [from old catalog]

1883

Classified index of subjects of invention adopted in the U. S. Patent Office

United States. Patent Office

1872

Catalog of patents vested in custodian

United States. Patent Office

1942

Decisions of Commissioner of Patents and U.S. courts in patent and trademark and copyright cases

United States. Patent Office

1869

Patent attorneys and agents available to represent inventors before the U.S. Patent office

United States. Patent Office

1962

U.S. patents covering time keeping mechanisms

United States. Patent Office

1923