CH22712A
(en )
1902-03-31
Clockwork adjustment device
CH21474A
(en )
1901-07-15
Watch setting device
FR471879A
(en )
1914-11-13
Water purification system
FR473895A
(en )
1915-01-28
Spindle-float system for inland waterway and maritime navigation
FR18852E
(en )
1914-07-27
Method and device for the purification of feed water
FR19764E
(en )
1915-08-17
Spindle-float system for inland waterway and maritime navigation
FR1280758A
(en )
1962-01-08
Process and equipment for the clarification of liquids and particularly for water purification
CH22625A
(en )
1902-02-28
Device for controlling the striking of the hours, applicable to clocks of various kinds
FR468763A
(en )
1914-07-16
Device for the purification of waste water
FR502300A
(en )
1920-05-08
Improvements to the purification of sewage and other liquids
FR493874A
(en )
1919-08-23
Metal reinforcement system for frames of glazed panels and the like and for metal carpentry
CH22362A
(en )
1902-01-15
Balance wheel for portable timepieces
CH13632A
(en )
1897-07-15
Device for operating the mobile dial in 24-hour watches
FR500108A
(en )
1920-03-03
Improvements in the treatment of gases containing sulfurous acid
CH21972A
(en )
1901-10-31
Cooling vessel for connection to the cooling water line of explosion engines
FR507800A
(en )
1920-09-23
Metering system for water or any liquids
CH14446A
(en )
1897-11-30
Improvement in setting the time of Roskopf system watches
CH21315A
(en )
1901-06-30
Advanced motor device for watches and clocks and marine chronometers
CH18770A
(en )
1900-03-15
Installation for the purification of carbonic acid
CH20720A
(en )
1901-03-15
Water meter
FR485014A
(en )
1917-12-04
Device for attaching straps or ribbons to watches
FR1391084A
(en )
1965-03-05
Bacterial sludge plant for the biological purification of wastewater
CH14984A
(en )
1898-03-31
Device for fixing the springs in the middle of watch cases
CH21312A
(en )
1901-06-30
Holding device for the case cover and the movement ring of pocket watches
FR476091A
(en )
1915-07-09
System for reducing the retraction time of films in cinematography