Certified copy of transfers of patent rights : Washington, 1816 Aug 1.United States. Department of StateCertified copy of transfers of patent rights from George W. Robinson to Henry Grilly, from Henry Grilly to Amasa Goodyear, William K. Lamson, Silas Grilly, and Ebenezer Scott; and from Ira Ives to Amasa Goodyear. Signed by Secretary of State James Monroe.text