US2160361A
(en )
1939-05-30
Calculating machine
GB518837A
(cg-RX-API-DMAC7.html )
US2705106A
(en )
1955-03-29
Calculating machines
GB479234A
(cg-RX-API-DMAC7.html )
1900-01-01
US3072329A
(en )
1963-01-08
Control for motor operated business machines
US2459441A
(en )
1949-01-18
Computing machine
GB650357A
(en )
1951-02-21
Differential setting mechanism for cash registers or similar accounting machines
GB601375A
(cg-RX-API-DMAC7.html )
US1339704A
(en )
1920-05-11
Combined typewriting and computing machine
GB633957A
(cg-RX-API-DMAC7.html )
US2994474A
(en )
1961-08-01
fleming
US3039680A
(en )
1962-06-19
Cash registers
GB417991A
(cg-RX-API-DMAC7.html )
1900-01-01
US1179564A
(en )
1916-04-18
Adding-machine.
GB484095A
(cg-RX-API-DMAC7.html )
GB516693A
(cg-RX-API-DMAC7.html )
GB205870A
(en )
1923-10-24
Improvements in or relating to calculating machines
GB491465A
(cg-RX-API-DMAC7.html )
GB487494A
(cg-RX-API-DMAC7.html )
GB381769A
(cg-RX-API-DMAC7.html )
GB496720A
(cg-RX-API-DMAC7.html )
GB423169A
(en )
1935-01-24
Improvements in or relating to calculating and the like machines
GB416498A
(cg-RX-API-DMAC7.html )
GB822428A
(cg-RX-API-DMAC7.html )
GB508141A
(cg-RX-API-DMAC7.html )