FR1074992A
(en )
1954-10-11
Mixtures convertible into hard resinous products
CH314622A
(en )
1956-06-30
Dust extractor
CH319303A
(en )
1957-02-15
Process for recovering cryolite from the coal floor of electrolytic furnaces
FR1111054A
(en )
1956-02-22
Improvements in processes for carbonizing bituminous coals
AT181676B
(en )
1955-04-12
Process for burning hard coal coke that has been degassed as much as possible in dust form
AT178407B
(en )
1954-05-10
Process for burning hard coal coke that has been degassed as much as possible in dust form
CH296883A
(en )
1954-02-28
Process for the combustion of hard coal coke in the form of dust.
CH318445A
(en )
1957-01-15
Process for the recovery of dimethylnitrosamine
AT191378B
(en )
1957-08-26
Process for briquetting coal
AT193343B
(en )
1957-11-25
Process for improving the stability of coking coal cake
AT183744B
(en )
1955-11-10
Process for the production of coke from coals which do not coke in themselves
AT194365B
(en )
1958-01-10
Process for coking coal
CH300925A
(en )
1954-08-31
Process for cleaning multi-cell centrifugal dust collectors.
AT186763B
(en )
1956-09-10
Process for refining carbonaceous substances
AT192418B
(en )
1957-10-25
Process for the continuous fractionation of coal tar
CH296672A
(en )
1954-02-28
Process for cleaning heavy fuel oils.
FR832406A
(en )
1938-09-27
Improvements to processes for preparing coal and other materials
AT178731B
(en )
1954-06-10
Procedure for flue grinding
AT177357B
(en )
1954-01-25
Process for improving the surface of skiing areas
AT180948B
(en )
1955-01-25
Milling machine for removing stone formations
AU111570B2
(en )
1940-10-03
Improvements in or relating to apparatus for dry distillation of shale, coal or like material
FR1143418A
(en )
1957-10-01
Improvements to machines for removing coal
DK84989C
(en )
1958-02-10
Process for treating natural calcium carbonate to obtain very fine particles.
CA487970A
(en )
1952-11-11
Coal burning apparatus
AT172623B
(en )
1952-09-25
Process for the extraction of crystalline substances from tar fractions, in particular coal tar