United States Patent: 3892654
We have lately been documenting the accomplishments of Pittsburgh's old Gulf Oil Corporation, and their Pittsburg(KS) & Midway Mining subsidiary, in the development of Coal liquefaction technology.
As we have reported, much of their CoalTL work seems to have been done under contract to, and to have been paid for by, the United States Government.
That is true of this invention, as well; confirmed both in the assignment of rights and by the following statement excerpted from the body of the text:
We have lately been documenting the accomplishments of Pittsburgh's old Gulf Oil Corporation, and their Pittsburg(KS) & Midway Mining subsidiary, in the development of Coal liquefaction technology.
As we have reported, much of their CoalTL work seems to have been done under contract to, and to have been paid for by, the United States Government.
That is true of this invention, as well; confirmed both in the assignment of rights and by the following statement excerpted from the body of the text: