US3151722A
(en )
1964-10-06
Spring actuated typewriter action with fault sensing means
GB765291A
(cg-RX-API-DMAC7.html )
US2226960A
(en )
1940-12-31
Accounting machine
US2087182A
(en )
1937-07-13
Listing adding machine
US2668011A
(en )
1954-02-02
Total control mechanism for accounting machines
GB190902119A
(en )
1909-09-30
Improvements in or relating to Adding Machines.
US2055623A
(en )
1936-09-29
Calculating machine
US2614749A
(en )
1952-10-21
Totalizer actuator control mechanism
US1738144A
(en )
1929-12-03
morton
GB172917A
(cg-RX-API-DMAC7.html )
GB739747A
(cg-RX-API-DMAC7.html )
US3040977A
(en )
1962-06-26
Function control mechanism for manual adding machines
US2321013A
(en )
1943-06-08
Listing adding machine
GB283486A
(cg-RX-API-DMAC7.html )
GB1063900A
(cg-RX-API-DMAC7.html )
GB808192A
(cg-RX-API-DMAC7.html )
GB191118735A
(en )
1912-05-09
Calculating Machines of the Thomas Type.
GB243734A
(cg-RX-API-DMAC7.html )
GB693659A
(cg-RX-API-DMAC7.html )
GB608989A
(en )
1948-09-23
Improvements in calculating machines
GB934746A
(en )
1963-08-21
A keyboard assembly for a cash register or similar accounting machine
GB285885A
(cg-RX-API-DMAC7.html )
GB191421089A
(en )
1915-09-30
Improvements in or relating to Calculating Machines.
GB191403084A
(en )
1915-02-04
Improvements in Adding Machines.
GB749504A
(cg-RX-API-DMAC7.html )