CH53995A
(en )
1912-04-16
Device indicating the development of the barrel spring in braillet timepieces
FR405768A
(en )
1910-01-13
Winding indicator device in watch movements
CH48384A
(en )
1910-10-17
Device indicating the unwinding of the spring in watch movements
FR411137A
(en )
1910-06-08
Clockwork spring development indicator
FR463432A
(en )
1914-02-23
Spring key in watch movements
FR11945E
(en )
1910-06-04
Winding indicator device in watch movements
FR13112E
(en )
1911-02-03
Clockwork spring development indicator
CH61738A
(en )
1913-10-16
Chronometry device indicating device
FR433638A
(en )
1912-01-12
Special modification of the lever escapement (watchmaking)
FR13084E
(en )
1911-01-19
Winding indicator device in watch movements
FR13791E
(en )
1911-06-30
Winding indicator device in watch movements
FR420600A
(en )
1911-02-02
Tilt indicator
FR412140A
(en )
1910-07-04
Improvements in aviation devices
CH68853A
(en )
1915-04-16
Device for indicating the degree of tension of a barrel spring
FR429734A
(en )
1911-09-29
Device applicable to all circular horological escapements
FR14755E
(en )
1912-02-12
Special modification of the lever escapement (watchmaking)
CH62282A
(en )
1913-11-17
Assembly device
CH55063A
(en )
1912-07-16
Watch movement winding device
CH44552A
(en )
1909-08-16
Two-barrel timepiece winding device
CH73933A
(en )
1916-12-16
Electro-magnetic device intended to replace the mechanical escapement in watch movements
DK15363C
(en )
1911-12-04
Device by Woltmann's Speedometer for Liquids.
FR417499A
(en )
1910-11-15
Improvements in acetylene lanterns
CH53291A
(en )
1912-02-16
Rackmaking for pendulum timepieces
NL1810C
(en )
1917-04-02
Measuring and recording device for liquid masses
FR431638A
(en )
1911-11-15
Sight testing device