FR700269A
(en )
1931-02-26
Improvements in electroplating processes and apparatus
FR694436A
(en )
1930-12-03
Improvements in apparatus and methods for treating carbonaceous and other materials
FR630563A
(en )
1927-12-05
Improvement in dyeing processes and apparatus
FR681164A
(en )
1930-05-15
Improvements to processes and apparatus for detecting defects in electrical conductors
FR631382A
(en )
1927-12-19
Improvements in electrolysis processes and apparatus
FR746197A
(en )
1933-05-23
Improvements in methods and apparatus for the treatment of molten materials
FR37243E
(en )
1930-11-03
Improvement in apparatus and processes for the concentration of minerals
FR657874A
(en )
1929-05-28
Improvements to processes and apparatus for treating petroleum
FR646423A
(en )
1928-11-12
Improvements in methods and apparatus for treating filaments
FR842545A
(en )
1939-06-14
Improvements in processes and apparatus for treating hydrocarbons
FR663515A
(en )
1929-08-22
Improvements in processes and equipment for the treatment of heavy hydrocarbons
FR702469A
(en )
1931-04-09
Improvements in processes and apparatus for treating petroleum hydrocarbons
FR759998A
(en )
1934-02-14
Improvements in processes and equipment for treating hydrocarbons
FR653805A
(en )
1929-03-28
Improvements in methods and apparatus for processing filaments
FR638661A
(en )
1928-05-31
Improvements to methods and apparatus for radiovision
FR623848A
(en )
1927-07-01
Improvement in methods and apparatus for testing isolators
FR37872E
(en )
1931-02-04
Improvements in apparatus and processes for ore concentraton
FR675751A
(en )
1930-02-14
Improvements in apparatus and methods for incorporating volatiles into liquids
FR694924A
(en )
1930-12-09
Improvements in processes and apparatus for preparing synthetic hydrocarbon products
FR33669E
(en )
1928-11-29
Improvements to methods and apparatus for radiovision
FR673999A
(en )
1930-01-22
Improvements in methods and apparatus used for transplantation
FR639785A
(en )
1928-06-29
Improvements in methods and apparatus for processing filaments
FR616812A
(en )
1927-02-09
Apparatus and methods for filtration
FR718706A
(en )
1932-01-28
Improvements in methods and apparatus for drawing tubes
FR680048A
(en )
1930-04-24
Improvements to bearings and processes and apparatus for manufacturing them