Items
Relation is exactly
Walker, George D
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[W100AAS], Patent Caveat, Thomas Alva Edison, February 4th, 1875
1875-02-04 -
[W100AAY], Patent Caveat, Thomas Alva Edison, September 23rd, 1875
1875-09-23 -
[W100ABI], Patent Caveat, Thomas Alva Edison, May 31st, 1876
1876-05-31 -
[W100BA1B], Patent Application, Thomas Alva Edison, June 22nd, 1870
1870-06-22 -
[W100BA1E], Patent Application, Thomas Alva Edison, April 23rd, 1873
1873-04-23