GB783871A
(cg-RX-API-DMAC7.html )
US2148760A
(en )
1939-02-28
Calculating machine
US2298202A
(en )
1942-10-06
Listing calculator
US2285311A
(en )
1942-06-02
Accounting machine
US2636679A
(en )
1953-04-28
Keyboard clearing mechanism
US2256799A
(en )
1941-09-23
Calcoating machine
US2070785A
(en )
1937-02-16
Register
GB783872A
(cg-RX-API-DMAC7.html )
GB608989A
(en )
1948-09-23
Improvements in calculating machines
US965410A
(en )
1910-07-26
Adding and listing machine.
GB499027A
(cg-RX-API-DMAC7.html )
GB483086A
(cg-RX-API-DMAC7.html )
GB474938A
(cg-RX-API-DMAC7.html )
GB191403083A
(en )
1915-02-05
Improvements in Adding Machines.
GB693659A
(cg-RX-API-DMAC7.html )
GB423169A
(en )
1935-01-24
Improvements in or relating to calculating and the like machines
US1150949A
(en )
1915-08-24
Adding-machine.
US2809782A
(en )
1957-10-15
fleming
GB191021412A
(en )
1911-01-19
Improvements in or relating to Transfer Mechanism for Calculating Machines.
GB191311823A
(en )
1914-03-05
Improvements in and relating to Adding and Listing Machines.
GB424420A
(cg-RX-API-DMAC7.html )
1900-01-01
GB191219274A
(en )
1913-04-03
Improvements in Calculating Machines.
GB903879A
(cg-RX-API-DMAC7.html )
GB730465A
(cg-RX-API-DMAC7.html )
GB245186A
(cg-RX-API-DMAC7.html )
1900-01-01