US3241756A
(en )
1966-03-22
Printing mechanism for calculating machines
US2230682A
(en )
1941-02-04
Interlock for cash registers
US2079355A
(en )
1937-05-04
Automatic overdraft device for
US2088434A
(en )
1937-07-27
Calculating machine
US2261341A
(en )
1941-11-04
Adding and listing machine
GB420807A
(cg-RX-API-DMAC10.html )
1900-01-01
US1630814A
(en )
1927-05-31
Cash register
GB434369A
(cg-RX-API-DMAC10.html )
US1966657A
(en )
1934-07-17
von pein
GB749504A
(cg-RX-API-DMAC10.html )
GB438369A
(cg-RX-API-DMAC10.html )
GB191511254A
(en )
1916-08-04
Improvements in Combined Typewriting and Computing Machines.
GB783849A
(cg-RX-API-DMAC10.html )
GB629975A
(cg-RX-API-DMAC10.html )
GB604165A
(cg-RX-API-DMAC10.html )
GB417991A
(cg-RX-API-DMAC10.html )
1900-01-01
GB483093A
(cg-RX-API-DMAC10.html )
GB416498A
(cg-RX-API-DMAC10.html )
GB285885A
(cg-RX-API-DMAC10.html )
GB528567A
(cg-RX-API-DMAC10.html )
GB427722A
(cg-RX-API-DMAC10.html )
GB190828253A
(en )
1909-12-28
Improvements in and relating to Mechanical Calculators.
GB191120333A
(en )
1912-09-12
Improvements in and relating to Printing Mechanism for Cash Registers and the like.
GB631379A
(cg-RX-API-DMAC10.html )
GB191219273A
(en )
1913-03-13
Improvements in the Keyboards and Connecting Members of Calculating Machines.