Index of Oil-Shale and Shale-Oil Patents, 1946-56: A Supplement to Bulletins 467 and 468: (In Three Parts) [Part 2]. United Kingdom Patents
Description: From Introduction: "This part of Bulletin 574 contains 180 United Kingdom patents that relate to retorting (and distilling underground), refining, and utilization of oil shale and its products. The largest single group, of which the majority was assigned to a single company, relates to fluidized handling of shale."
Creator: United States. Bureau of Mines.
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