[PT032ACX-F]
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Items
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[PT032ACX], Patent Application, Thomas Alva Edison, July 31st, 1891
1891-07-31 -
[PT032ACX1], Letter from Thomas Alva Edison to Richard Nott Dyer, May 30th, 1891
1891-05-30 -
[PT032ACX2], Technical Note, Thomas Alva Edison, May 30th, 1891
1891-05-30 -
[PT032ACX3], Letter from Edward M Bentley, General Electric Co to Dyer and Seely, November 3rd, 1893
1893-11-03