GB1497337A
(en )
1978-01-05
Multiple speed ratio transmission mechanism
US2379877A
(en )
1945-07-10
Calculating machine
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
US1794514A
(en )
1931-03-03
Driving mechanism for calculating machines
CN102635670A
(zh )
2012-08-15
正反双向输入变速机构
GB918521A
(en )
1963-02-13
Change speed gearing
GB736097A
(cg-RX-API-DMAC10.html )
GB161848A
(cg-RX-API-DMAC10.html )
CN216131328U
(zh )
2022-03-25
一种换挡装置及农业机械
GB139576A
(cg-RX-API-DMAC10.html )
GB191501293A
(en )
1915-12-30
Improvements in or connected with Variable Speed Gears more particularly for use in connection with Motor Cars and Motor Cycles.
GB794767A
(en )
1958-05-07
Improvements in or relating to calculating machines
GB368117A
(cg-RX-API-DMAC10.html )
FR2357667A1
(fr )
1978-02-03
Perfectionnements aux dispositifs pour la recherche du pas associes aux ratieres et autres mecaniques de tissage
GB769817A
(en )
1957-03-13
Improvements in or relating to intermittent gearing particularly for ratio-chance devices for calculating machines
GB490199A
(cg-RX-API-DMAC10.html )
GB326041A
(en )
1930-03-06
Improvements in variable-speed gearing
GB215706A
(cg-RX-API-DMAC10.html )
GB385829A
(cg-RX-API-DMAC10.html )
GB337183A
(cg-RX-API-DMAC10.html )
GB542516A
(cg-RX-API-DMAC10.html )