FR683305A
(en )
1930-06-11
Improvements to processes and apparatus for coloring lamps
FR700269A
(en )
1931-02-26
Improvements in electroplating processes and apparatus
FR31287E
(en )
1927-01-27
Improvements in processes and apparatus for gasifying fuels
FR681164A
(en )
1930-05-15
Improvements to processes and apparatus for detecting defects in electrical conductors
FR630563A
(en )
1927-12-05
Improvement in dyeing processes and apparatus
FR631382A
(en )
1927-12-19
Improvements in electrolysis processes and apparatus
FR566812A
(en )
1924-02-21
Improvements in processes and apparatus for gasifying bituminous fuels
FR623848A
(en )
1927-07-01
Improvement in methods and apparatus for testing isolators
FR632073A
(en )
1927-12-31
Method and apparatus for degassing fuels
FR638661A
(en )
1928-05-31
Improvements to methods and apparatus for radiovision
FR569572A
(en )
1924-04-14
Improvements in processes and apparatus for burning liquid fuels
FR33669E
(en )
1928-11-29
Improvements to methods and apparatus for radiovision
FR594351A
(en )
1925-09-11
Method and apparatus for gasifying liquid fuels
FR616812A
(en )
1927-02-09
Apparatus and methods for filtration
FR676298A
(en )
1930-02-20
Improvements to processes and apparatus for burning liquid fuels
FR582646A
(en )
1924-12-23
Improvements in methods and apparatus for making paper and paper articles
BE365069A
(en )
1929-12-31
Improvements in processes and apparatus for burning finely divided fuels
FR598415A
(en )
1925-12-16
Improvements in processes and apparatus for the manufacture of agglomerated fuels
FR722748A
(en )
1932-03-24
Improvements in apparatus for the combustion of pulverized fuels
FR649809A
(en )
1928-12-28
Improvements to the process and apparatus for burning finely divided fuels
FR702469A
(en )
1931-04-09
Improvements in processes and apparatus for treating petroleum hydrocarbons
FR633470A
(en )
1928-01-30
Improvements in processes and apparatus for gas production
FR699487A
(en )
1931-02-16
Improvements in tobacco processing methods and apparatus
FR657874A
(en )
1929-05-28
Improvements to processes and apparatus for treating petroleum
FR694436A
(en )
1930-12-03
Improvements in apparatus and methods for treating carbonaceous and other materials