US2071141A
(en )
1937-02-16
Joht doe
GB468668A
(https= )
US2141333A
(en )
1938-12-27
Cash register
US1877801A
(en )
1932-09-20
britten
GB1197609A
(en )
1970-07-08
Improvements in or relating to Calculating Machines, Cash Registers or the like.
US2884851A
(en )
1959-05-05
Record material printing and feeding
US1239598A
(en )
1917-09-11
Calculating-machine.
US3050245A
(en )
1962-08-21
Totalizer engaging controls
GB368117A
(https= )
GB491465A
(https= )
US1188467A
(en )
1916-06-27
Total-printing cash-register.
US2170183A
(en )
1939-08-22
Cash register and accounting
US1380792A
(en )
1921-06-07
Calculating-machine
US3186637A
(en )
1965-06-01
Cash registers and like adding machines
US3716694A
(en )
1973-02-13
Blocking device for registering business machines
Locke
1924
The history of modern calculating machines, an American contribution
GB263237A
(https= )
GB387032A
(https= )
GB361484A
(https= )
GB191410664A
(en )
Improvements in or relating to Cash Registers.
GB191214011A
(https= )
GB464422A
(https= )
GB486841A
(https= )
GB734159A
(https= )
GB360842A
(https= )