Pivoted tubing well connection
United States Patent 3041090
Inventors:
Ashe, Robert E.
Haeber, John A.
Newman, Nicholas B.
Otteman, Lloyd G.
Publication Date:
06/26/1962
Other Classes:
285/351, 166/367, 403/119
International Classes:
E21B17/08; E21B33/038; F16L39/00; E21B17/02; E21B33/03