GB452787A
(enrdf_load_stackoverflow )
US3703987A
(en )
1972-11-28
Keyboard locking device
US1630814A
(en )
1927-05-31
Cash register
US2033045A
(en )
1936-03-03
Computing machine
US2365874A
(en )
1944-12-26
Computing machine
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.
US1601398A
(en )
1926-09-28
- cincinnati
GB430251A
(en )
1935-06-17
Improvements in or relating to machines for verifying perforated record cards
US2809782A
(en )
1957-10-15
fleming
US1731929A
(en )
1929-10-15
Cash register
GB317057A
(en )
1930-10-30
Improvements in or relating to calculating or the like machines
GB555659A
(en )
1943-09-01
Improvements in or relating to calculating or like machines
GB693657A
(en )
1953-07-01
Calculating machines
GB301920A
(enrdf_load_stackoverflow )
1930-03-07
GB191019976A
(en )
1911-08-24
Improvements in Cash Registers and Autographic Devices therefor.
GB749504A
(enrdf_load_stackoverflow )
GB191417946A
(en )
1915-04-06
Improvements in Adding Machines.
GB497640A
(enrdf_load_stackoverflow )
GB146273A
(en )
1921-10-24
Improvements in and relating to keyboard setting mechanism for adding-machines
GB144685A
(en )
1921-04-07
Improvements in printing mechanism for calculating machines
GB807392A
(en )
1959-01-14
Improvements in type action and case shift for typewriters
GB368254A
(en )
1932-03-01
Improvements in or relating to calculating machines and the like
GB768516A
(enrdf_load_stackoverflow )
GB228184A
(enrdf_load_stackoverflow )
GB408795A
(en )
1934-04-19
Improvements in or relating to calculating and/or check writing machines