FR665947A
(en )
1929-09-25
Improvements to devices for exerting pressure
FR616430A
(en )
1927-02-02
Improvements to devices intended for lifting liquids
FR648020A
(en )
1928-12-04
Improvements to devices intended for spraying liquids
BE334233A
(en )
1926-06-30
Improvements to devices intended for lifting liquids
FR30891E
(en )
1926-10-04
Improvements to liquid filters
FR587459A
(en )
1925-04-18
Improvements to devices used to degas liquids
FR637872A
(en )
1928-05-10
Improvements to pantograph devices for multiple reproductions
FR608587A
(en )
1926-07-29
Improvements to liquid filters
FR619027A
(en )
1927-03-25
Improvements to devices used to degas liquids
FR650134A
(en )
1929-01-04
Improvements to liquid lifting devices
FR655098A
(en )
1929-04-15
Improvements to liquid lifting devices
FR670433A
(en )
1929-11-28
Improvements to extending columns for displays
FR585079A
(en )
1925-02-20
Improvements to devices intended for the aeration of liquids
FR591453A
(en )
1925-07-04
Improvements to liquid lifting devices
FR624269A
(en )
1927-07-12
Improvements to liquid dispensing devices
FR699575A
(en )
1931-02-17
Improvements to devices for the treatment of liquids
FR601316A
(en )
1926-02-27
Apparatus for lifting liquids
FR640281A
(en )
1928-07-10
Improvements to devices for testing ventilators
FR643277A
(en )
1928-09-13
Improvements to projection devices
FR660845A
(en )
1929-07-17
Improvements to mixing devices
FR592353A
(en )
1925-08-01
Improvements to liquid lifting devices
FR618879A
(en )
1927-03-22
Improvements to liquid dispensing devices
FR584831A
(en )
1925-02-14
Improvements to devices for spraying liquids
FR594098A
(en )
1925-09-05
Improvements to exhibition devices
FR594097A
(en )
1925-09-05
Improvements to exhibition devices