In the matter of the appeal of Edison & Harrington from the decision of the Commissioner of Patents of March 20, 1875, to the secretary of the Interior
In the matter of the appeal of Edison & Harrington from the decision of the Commissioner of Patents of March 20, 1875, to the secretary of the Interior
Details
- OL Work ID
- OL35602807W
Subjects
Trials, litigationTelegraphPatentsDuplex systemQuadruplex systemPatent suits