[PT032AIW-F]
https://edisondigital.rutgers.edu/folder/PT032AIW-F
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[PT032AIW], Patent Application, Thomas Alva Edison, November 20th, 1908
1908-11-20 -
[PT032AIW1], Letter from Thomas Alva Edison to Frank Lewis Dyer, November 10th, 1908
1908-11-10 -
[PT032AIW2], Technical Note, Thomas Alva Edison, November 10th, 1908
1908-11-10 -
[PT032AIW3], Letter from Thomas Alva Edison to Frank Lewis Dyer, November 27th, 1908
1908-11-27