GR348B
(en )
1922-10-17
METHOD OF USING MINERAL OIL OILS AND BODY CARBOHYDRATES.
GR265B
(en )
1922-04-16
METHOD OF NEUTRALIZATION OF OILS AND FATS.
FR574265A
(en )
1924-07-09
Lubricant
CA220517A
(en )
1922-07-04
Treatment of oil shale
GR28B
(en )
1921-03-03
PERFECTION OF THE METHOD FOR THE USE OF COAL AND MINERAL OIL IN THE OVENS OF BOILERS.
GR775B
(en )
1924-12-08
METHOD OF CLEANING AND DECOLARING OF OILS AND FATS.
CA225621A
(en )
1922-11-07
Method of operating oil wells
DK35863C
(en )
1926-04-12
Crude oil engine.
GR952B
(en )
1925-06-24
METHOD FOR NEUTRALIZATION OF FATS AND OILS.
GR439B
(en )
1923-05-23
METHOD OF OXIDATION OF FAT OILS.
CA215387A
(en )
1922-01-24
Desulfurization of oil
CA220650A
(en )
1922-07-11
Treatment of oil
FR589710A
(en )
1925-06-04
Extraction of oils from petroleum sands and rocks
FR29373E
(en )
1925-07-25
Extraction of oils from petroleum sands and rocks
DK34683C
(en )
1925-06-29
High pressure crude oil engine.
FR572104A
(en )
1924-05-30
Oil cracking enhancements
CA231337A
(en )
1923-05-22
Treatment of petroleum oils
GR1096B
(en )
1926-01-12
METHOD OF PRODUCTION OF OIL AND THIS SIMILAR AS BEFORE BEING OF THEM.
DK33905C
(en )
1924-11-24
Lubricating oil emulsion.
CA209424A
(en )
1921-03-15
Method of making lubricating oils
CA215722A
(en )
1922-02-07
Method of reducing the viscosity of heavy petroleum oils
GR91B
(en )
1921-07-02
METHOD FOR EXPORTING OIL FROM OILS AND OTHER FRUITS.
ES84764A1
(en )
1923-06-01
Improvements in the distillation of lubricating mineral oils.
CA234019A
(en )
1923-09-04
Method of extracting oil
ES78855A2
(en )
1922-06-01
Procedure for the purification of oils and fats.