146287-A is referenced by 5 patents.

146,287. Fischer, F. Nov. 13, 1916, [Convention date]. Drawings to Specification. Retorts.-The destructive distillation of coal for the recovery of oil is carried out in rotary retorts containing a heavy iron roller of the same length as the retort. The process may be worked under reduced pressure, and with admission of steam. A coating of semi-coke is formed on the interior surface of the retort, and when the coating begins to collapse the process is completed.

Improvements in and relating to the distillation of coal
Application Number
GB19200017174 19200624
Publication Number
146287 (A)
Application Date
June 24, 1920
Publication Date
August 11, 1921
Fischer Franz
C10B 13/00
C10B 01/00
C10B 13/00
C10B 01/10
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