This infringement case details the work of Edison and his assistants in the development of rock crushing technology at the Ogden mine during the period 1889-1899. The case involves the transfer of this technology to the Edison Portland Cement plant at Stewartsville, N.J. and its sale to other companies. The testimony by Emil Herter and Walter S. Mallory details research and development work by Edison and his assistants. The pocket notebooks to which Herter makes reference in his testimony can be found in the New Jersey and Pennsylvania Concentrating Works Plant Operations Records. These notebooks have not been selected. The following items have been selected:
- Complainant's Brief on Final Hearing
- Complainant's Record on Final Hearing
- Testimony by Walter S. Mallory and Emil Herter
[QX001] Litigation Record, 1909-1910 1909-1910
[QX001001], Legal Testimony, Thomas Alva Edison, Empire Limestone Co, Allis-Chalmers Co, September 8th, 1910 1910-09-08
[QX001A099], Legal Testimony, Emil Herter, November 1909 1909-11-00
[QX001A545], Legal Testimony, Emil Herter, August 31st, 1910 1910-08-31
[QX001A638], Legal Testimony, Walter Seeley Mallory, September 5th, 1910 1910-09-05
[QX001A649], Report from New Jersey and Pennsylvania Concentrating Works, Thomas Alva Edison, January 12th, 1898 1898-01-12
[QX001A675], Letter from Walter Seeley Mallory, New Jersey and Pennsylvania Concentrating Works to New Jersey Zinc Co, April 21st, 1898 1898-04-21