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Start Over Repository The Historical and Interpretive Collections of The Franklin Institute Subject Patents

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Edwin H. Armstrong papers, 1909-1956 (inclusive)

Extent:
4.35 linear feet
Abstract:
Edwin H. Armstrong (1890-1954) was an American electrical engineer and inventor, best known for inventing the regenerative circuit, the super-regenerative circuit, the superheterodyne receiver, and FM (frequency modulation) radio. He spent much of his life battling in court over his patent rights, primarily with Lee De Forest and Radio Corporation of America, and took his own life in 1954. Edwin H. Armstrong papers, 1909-1956, consist of photographs, lecture notes, letters, certificates, published materials, programs and ephemera, materials from his memorial service, and other documents.

Held at: The Historical and Interpretive Collections of The Franklin Institute [Contact Us]

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The Historical and Interpretive Collections of The Franklin Institute collection of oversized papers, 1790-1984 (inclusive)

Extent:
6.0 linear feet
Abstract:
Founded in Philadelphia, Pennsylvania, in 1824, in honor of America's first scientist, Benjamin Franklin, The Franklin Institute is one of the oldest and most important science institutes in the nation. Its mission is to inspire a passion for learning about science and technology. The Historical and Interpretive Collections of The Franklin Institute collection of oversized papers, 1790-1984, consists of oversized materials such as technical drawings of machinery (some used for patents), posters, illustrations, prints, drawings, engravings, maps, photographs, certificates, blueprints, and newspaper pages.

Held at: The Historical and Interpretive Collections of The Franklin Institute [Contact Us]

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The Historical and Interpretive Collections of The Franklin Institute subject files, 1792-1943 (inclusive)

Extent:
2.5 linear feet
Abstract:
Founded in Philadelphia, Pennsylvania, in 1824, in honor of America's first scientist, Benjamin Franklin, The Franklin Institute is one of the oldest and most important science institutes in the nation. Its mission is to inspire a passion for learning about science and technology. The Historical and Interpretive Collections of The Franklin Institute subject files, 1792-1943, consist of files arranged alphabetically by subject containing a variety of primary and secondary-source documents related to each topic. The subject headings in the collection include Assorted Industry, Assorted Machines/Technology, Aviation, Cars, Deeds, Electricity, Maps, People, Newspaper Clippings, Patents, The Franklin Institute, Trains, Printing/Typing, and other topics.

Held at: The Historical and Interpretive Collections of The Franklin Institute [Contact Us]