Wilson

On December 17, 1934, appellee filed a bill of complaint alleging acts of infringement of six patents for improve-its in well elevators and praying for an hunting and an injunction. On May 16, 5, the District Court issued a prelimininjunction restraining appellant from ■inging letters patent as follows: Pat-No. 1,341,957 issued to E. C. Wilson, entor, June 1, 1920, filed May 2, 1914; ent No. 1,314,996 issued to E. C. Wil- , inventor, September 2, 1919, filed Jan-■y 2, 1909; patent No. 1,511,699 issued tober 14, 1924, to C. E. Wilcox, inven- , assignor to E. C. Wilson, filed January 1921; patent No. 1,599,144 issued Sepaber 7, 1926, to H. M. Paulsen, inventor, signor to Dunn Manufacturing Company, :d September 12, 1923. The appeal is im orders of April 27, 1935, and May 3, 35, granting the injunction.

It appears from the complaint that ior to December 30, 1926, title to patents os. 1,314,996, 1,341,957, and 1,511,699 was :sted in appellant, his wife, and his two •others, G. B. Wilson and E. C. Wilson, id their wives, appellant and his wife ich owning one-sixteenth interest. On ecember 30, 1926, the owners of these itents granted to the Wilson Oil Tools orporation an exclusive…