GB363974A
(https= )
US2260291A
(en )
1941-10-28
Calculating machine
CH260945A
(fr )
1949-04-15
Dispositif de changement de vitesse.
US2165201A
(en )
1939-07-11
Change-speed gear, especially for bicycles
GB998249A
(en )
1965-07-14
Transmission devices for coupling a driven shaft to a driving shaft
GB1248250A
(en )
1971-09-29
Storage register control mechanism
US2645426A
(en )
1953-07-14
Predetermined counter value setting device
GB1203671A
(en )
1970-09-03
Gearboxes
US2273251A
(en )
1942-02-17
Calculating machine
GB736097A
(https= )
GB161848A
(https= )
GB139576A
(https= )
GB794767A
(en )
1958-05-07
Improvements in or relating to calculating machines
GB368117A
(https= )
GB882851A
(en )
1961-11-22
Degrees of arc counter
GB769817A
(en )
1957-03-13
Improvements in or relating to intermittent gearing particularly for ratio-chance devices for calculating machines
GB490199A
(https= )
GB191305824A
(en )
1914-03-09
Registering Pay Machine.
GB326041A
(en )
1930-03-06
Improvements in variable-speed gearing
TW202408128A
(zh )
2024-02-16
正逆轉正結構
GB215706A
(https= )
GB385829A
(https= )
GB337183A
(https= )
GB532666A
(https= )
GB214297A
(https= )