GB808192A
(https= )
US2121683A
(en )
1938-06-21
Calculating machine
US2682371A
(en )
1954-06-29
Pin carriage shifting mechanism for ten-key multiplying machines
US2087182A
(en )
1937-07-13
Listing adding machine
US2298202A
(en )
1942-10-06
Listing calculator
GB909935A
(en )
1962-11-07
Calculating or similar accounting machine
US3072329A
(en )
1963-01-08
Control for motor operated business machines
US1781689A
(en )
1930-11-18
Controlling mechanism for power-driven calculating machines
GB652446A
(en )
1951-04-25
Accounting and similar calculating machines
US2055623A
(en )
1936-09-29
Calculating machine
US2070785A
(en )
1937-02-16
Register
US2954158A
(en )
1960-09-27
Differential devices for cash registers
US3015434A
(en )
1962-01-02
Repeat cycling control mechanism for cash registers and accounting machines
GB765291A
(https= )
GB279423A
(https= )
GB1030318A
(https= )
GB709181A
(https= )
GB389632A
(https= )
USRE17466E
(en )
1929-10-22
chase
GB575100A
(https= )
GB934746A
(en )
1963-08-21
A keyboard assembly for a cash register or similar accounting machine
GB613616A
(https= )
GB778652A
(https= )
GB762003A
(https= )
GB416870A
(https= )