'The modern oil-pumping unit was developed by W.C. Trout of Lufkin Industries, based in this state'
Texas
20th CENTURY INNOVATION: The modern oil-pumping unit was developed by W.C. Trout of Lufkin Industries, based in this state
The modern oil-pumping unit was developed by W.C. Trout of Lufkin Industries, based in this state
The modern oil-pumping unit was developed by W.C. Trout of Lufkin Industries, based in this state
20th CENTURY INNOVATION
Texas
20th CENTURY INNOVATION