GB481920A
(https= )
US3703987A
(en )
1972-11-28
Keyboard locking device
US2088434A
(en )
1937-07-27
Calculating machine
US3092313A
(en )
1963-06-04
Register
GB660632A
(en )
1951-11-07
Cash registers and similar accounting machines
US2027449A
(en )
1936-01-14
Calculating machine and cash
US1913510A
(en )
1933-06-13
Calculating machine
GB191346A
(en )
1923-01-04
Improvements in and relating to keyboard and differential mechanism for cash registers and like machines
US2063740A
(en )
1936-12-08
Calculating machine
GB453348A
(https= )
US3603503A
(en )
1971-09-07
Automatic machine control device
US1463195A
(en )
1923-07-31
Cash register
GB285500A
(en )
1929-05-21
Improvements in or relating to cash registers
US2071388A
(en )
1937-02-23
Accounting machine
US1744033A
(en )
1930-01-21
berger
GB425542A
(https= )
GB243734A
(https= )
US1906805A
(en )
1933-05-02
Sellschaft
GB408975A
(https= )
US1795116A
(en )
1931-03-03
Cash register
US1688940A
(en )
1928-10-23
X x x-xx
GB271515A
(en )
1927-09-01
Improvements in or relating to cash registers and like accounting machines
GB511438A
(https= )
GB228184A
(https= )
GB286314A
(https= )