11/01/1902 [Supplied year, month, and day] Edison, Thomas Alva -- Technical Notes and Drawings
(Dyer, Frank Lewis; Herter, Emil) Patent application; Cement [Marginalia by Dyer, Frank Lewis]
[PT032AFR]  Patent Series -- Patent Application Files: Burning Portland Cement Clinker (1902)
[PT032AFR2; TAEM 184:270]
Courtesy of Thomas Edison National Historical Park.
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