GB431627A
(https= )
US3592309A
(en )
1971-07-13
Cyclically operable typewriter
GB431623A
(https= )
GB1134771A
(en )
1968-11-27
Typewriter line space mechanism
US2055623A
(en )
1936-09-29
Calculating machine
US3578132A
(en )
1971-05-11
Half-space carriage return mechanism for typewriters
GB736097A
(https= )
US3610389A
(en )
1971-10-05
Keyboard machine with sequentially responsive printing means
GB765291A
(https= )
GB447485A
(https= )
US1109315A
(en )
1914-09-01
Carriage mechanism for recording-machines.
US3040977A
(en )
1962-06-26
Function control mechanism for manual adding machines
US1066083A
(en )
1913-07-01
Type-writing machine.
GB463512A
(https= )
GB823136A
(en )
1959-11-04
Proportional letter feed mechanism
GB752785A
(en )
1956-07-11
Accounting machines and similar calculating machines
GB631379A
(https= )
GB1063900A
(https= )
GB191506359A
(en )
1916-04-27
Improvements in Locking Mechanism for Key Controlled Machines such as Cash Registers and the like.
GB464746A
(https= )
GB514973A
(https= )
GB191118735A
(en )
1912-05-09
Calculating Machines of the Thomas Type.
GB318256A
(https= )
GB712487A
(https= )
GB351698A
(https= )