SE307141B
(https= )
1968-12-23
GB549960A
(https= )
US2854123A
(en )
1958-09-30
Power operated tabulating mechanism
GB540315A
(https= )
US3023696A
(en )
1962-03-06
Printer keyboard
US3586150A
(en )
1971-06-22
Tabulator safety apparatus
GB983549A
(en )
1965-02-17
Improvements in typewriters
GB144685A
(en )
1921-04-07
Improvements in printing mechanism for calculating machines
US2094883A
(en )
1937-10-05
Key control for auxiliary printing units
GB191305530A
(en )
1914-03-05
Device for Preventing the Depression of More than One Key of the same Group in Cash Registers and like Machines.
US2649250A
(en )
1953-08-18
Calculating mechanism
GB459812A
(https= )
GB545438A
(https= )
GB555659A
(en )
1943-09-01
Improvements in or relating to calculating or like machines
GB518617A
(https= )
GB447485A
(https= )
GB191227768A
(en )
1913-11-27
Improvements in and relating to Keyboard and Interlocking Mechanism for Cash Registers and the like.
GB452787A
(https= )
GB191316036A
(en )
1914-09-11
Improvements in and relating to Calculating Machines.
GB768516A
(https= )
GB467784A
(en )
1937-06-23
Improved device for counting words and/or other symbols for use on typewriters or like keyboard instruments
GB540316A
(https= )
GB759514A
(en )
1956-10-17
Improvements in or relating to fastening inserting machines
ES257364A1
(es )
1960-08-16
Un mecanismo para destrabar las palancas portatipos en maquinas de escribir
GB190327879A
(en )
1904-10-13
Improvements in or relating to Permutation Locks.