. "American Bell Telephone Company v. Amos E. Dolbear et al. Bill of complaint [Filed Oct. 10, 1881]"@en . . . . . "Circuit Court of the United States, District of Massachusetts"@en . . "Electronic books"@en . . . . . . . . . . . "Patents"@en . . . . . "American Bell Telephone Company v. Amos E. Dolbear, et al. bill of complaint"@en . . .