File:US2253782A Keyboard for Electrical Musical Instrument (1940-05-07 filed, 1948-08-26 published) by Laurens Hammond - Solovox Fig1.jpg
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[edit]DescriptionUS2253782A Keyboard for Electrical Musical Instrument (1940-05-07 filed, 1948-08-26 published) by Laurens Hammond - Solovox Fig1.jpg |
English: US patent application 2253782, Laurens Hammond; George H. Stephens, "Keyboard for Electrical Musical Instrument", published 1948-08-26 , assigned to Hammond Instrument Company , filed 1940-05-07
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(filed) 1948-08-26 (published) |
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Source | US Patent Office | |||||||||||||||||
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creator QS:P170,Q123678 |
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Licensing
[edit]Public domainPublic domainfalsefalse |
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In general, the contents of United States patents are in the public domain.
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