Patents for useful inventions expired. Letter from the Secretary of State, transmitting a list of patents for useful inventions which have expired.

Letter from the Secretary of State transmitting a list of all the patents for discoveries, inventions, and improvements, which have expired within the year 1835, &c.
Published: (1836)

Patents for useful inventions -- 1836. Letter from the Secretary of State, transmitting lists of patents granted for useful inventions during the year 1836, &c.
Published: (1837)

Patents for inventions.

Patents and patented inventions.
Published: (1886)

Inventions and patents /
by: Edelman, Philip E., 1894-1984
Published: (1915)

Inventions, patents, and patent rights.
Published: (1919)

Patents for useful inventions, 1833. Letter from the Secretary of State transmitting a list of the names of persons to whom patents have been granted for new and useful inventions during the year 1833, &c.
Published: (1834)

Patents for chemical inventions /
Published: (1964)

Patents for inventions.
Published: (1893)

Patents for new inventions, &c. Letter from the Secretary of State, transmitting a list of patents granted for new inventions during the year 1834.
Published: (1835)

Certain patents for inventions.
Published: (1888)

From invention to patent : a scientist and engineer's guide /
by: Voldman, Steven H.
Published: (2018)

Inventions, patents, and patent rights.
Published: (1920)

Patents for useful inventions. Letter from the Secretary of State, transmitting a list of the names of persons who have invented any new or useful art, machine, &c., &c.
Published: (1833)

Chemical inventions and chemical patents.
by: Thomas, Edward, 1877-
Published: (1950)

Inventing and patenting sourcebook /
Published: (1990)

Patenting and marketing your invention /
by: Rivkin, Bernard
Published: (1986)

Cancellation of patents for inventions and discoveries.
Published: (1886)

List of patents for inventions and designs : issued by the United States, from 1790 to 1847, with the patent laws and notes of decisions of the courts of the United States for the same period /

Patenting the invention : application, prosecution, interference proceedings, with rules and forms.
by: Scher, V. Alexander, 1901-
Published: (1948)

[On state and condition of Patent office, and laws relating to issuing of patents for new and useful inventions and discoveries.].
Published: (1836)

Inventions and patents, their development and promotion /
by: Wright, Milton
Published: (1927)

Letter from the Secretary of State, transmitting a list of the names of persons to whom patents have been issued for any useful invention, during the year 1820.
Published: (1821)

Patents and inventions : General.
Published: (1931)

The nature of patentable invention : its attributes and definition.
by: Hayes, John Edward Rollins, 1873-
Published: (1948)

Patenting of inventions by officers and employees of the Government.
Published: (1928)

Compulsory licensing of patented inventions /
by: Thomas, John R., 1967-
Published: (2018)

Encouragement of industry, inventions, patents, and patent rights.
Published: (1920)

Letter from the Secretary of State, transmitting a list of the names of persons to whom patents have been granted for any new and useful invention, during the year 1822.
Published: (1823)

Patents granted in 1831. Letter from the Secretary of State, transmitting a list of the names of persons to whom patents have been granted for new inventions during the year 1831.
Published: (1832)

Preventing the publication of inventions by the grant of patents.
Published: (1917)

Pioneer inventions and pioneer patents ; a lecture on patent law delivered to the senior engineering students of Purdue university ... /
by: Keiper, Frank
Published: (1924)

Generic drug entry prior to patent expiration : an FTC study /
Published: (2002)

On the cost of patents of invention in different countries : a paper /
by: Hancock, W. Neilson (Wiliam Neilson), 1820-1888
Published: (1850)

British patents of invention, 1617-1977 : a guide for researchers /
by: Van Dulken, Stephen, 1952-
Published: (1999)

Letter from the Secretary of State, transmitting a list of the names of persons to whom patents have been granted for any useful invention from first of January, 1818, to first of January, 1819.
Published: (1819)