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Nancy Maria Donaldson Johnson
Nancy Maria Donaldson Johnson
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Themed Timelines

Main milestonesMain milestonesInvention and Patent: The Ice Cream Freezer (1843)Invention and Patent: The Ice Cream Freezer (1843)Early Life and Family: The Donaldson Years (1794-1820s)Early Life and Family: The Donaldson Years (1794-1820s)The Era of American Invention and Patent Law (1790-1890)The Era of American Invention and Patent Law (1790-1890)The History of Ice Cream (Pre-1843 to Late 1800s)The History of Ice Cream (Pre-1843 to Late 1800s)Post-Patent Life and Impact (1843-1890)Post-Patent Life and Impact (1843-1890)
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03.04.25
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The Era of American Invention and Patent Law (1790-1890)

This timeline provides context on the broader landscape of invention and patent law during Nancy Maria Donaldson Johnson's lifetime. It highlights the growing importance of patents and the challenges faced by women inventors.
First U.S. Patent Law
1790
The United States Congress passed the first Patent Act, establishing a system for granting patents to inventors and protecting their intellectual property.
Growth of American Industry
Early 1800s
The United States experienced significant industrial growth, leading to increased innovation and a greater demand for patents.
Increasing Recognition of Women Inventors
Mid-1800s
While facing societal obstacles, women began to make inroads in the field of invention. The number of patents granted to women gradually increased, although they remained a small minority of all inventors.
Revision of Patent Law
1836
A major revision of the patent law in 1836 introduced a system of examination to ensure the novelty of inventions before granting patents.
Further Industrialization and Innovation
Late 1800s
The late 19th century witnessed rapid technological advancements, contributing to a further surge in patent activity and industrial development.

Other Themed Timelines

Main milestonesMain milestonesEarly Life and Family: The Donaldson Years (1794-1820s)Early Life and Family: The Donaldson Years (1794-1820s)Invention and Patent: The Ice Cream Freezer (1843)Invention and Patent: The Ice Cream Freezer (1843)Post-Patent Life and Impact (1843-1890)Post-Patent Life and Impact (1843-1890)The History of Ice Cream (Pre-1843 to Late 1800s)The History of Ice Cream (Pre-1843 to Late 1800s)