GB197983A
(enExample )
US3623426A
(en )
1971-11-30
Print control means in traveling roller bed and cylinder print machines
US2593666A
(en )
1952-04-22
Key lock means for cash reg
US1651882A
(en )
1927-12-06
Calculating machine
GB1122887A
(en )
1968-08-07
A data entry machine
GB518840A
(enExample )
US1864193A
(en )
1932-06-21
Calculating machine
GB438369A
(enExample )
GB344393A
(enExample )
GB373220A
(enExample )
GB783869A
(enExample )
GB191511254A
(en )
1916-08-04
Improvements in Combined Typewriting and Computing Machines.
GB190120133A
(en )
1902-10-08
Improvements in Adding Machines.
GB190722221A
(en )
1908-10-08
Improvements in Accounting Machines applicable more particularly to Cash and Credit Registers
GB608989A
(en )
1948-09-23
Improvements in calculating machines
GB567290A
(enExample )
GB506013A
(enExample )
GB417991A
(enExample )
1900-01-01
GB484881A
(enExample )
GB633957A
(enExample )
GB727100A
(enExample )
GB190518341A
(en )
1906-07-05
Combined Typewriting and Adding Machine.
GB770319A
(enExample )
GB392181A
(enExample )
GB190218853A
(en )
1903-05-28
Improvements in Calculating Machines.