US3138091A
(en )
1964-06-23
Printing machines
GB414248A
(enExample )
US2209279A
(en )
1940-07-23
Typewriting machine
US2372886A
(en )
1945-04-03
Typewriting machine
US1601398A
(en )
1926-09-28
- cincinnati
GB430251A
(en )
1935-06-17
Improvements in or relating to machines for verifying perforated record cards
US2854123A
(en )
1958-09-30
Power operated tabulating mechanism
US1049818A
(en )
1913-01-07
Retraction-lock for combined type-writers and adders.
GB650357A
(en )
1951-02-21
Differential setting mechanism for cash registers or similar accounting machines
US1794464A
(en )
1931-03-03
Combined typewriting anb computing machine
US1274730A
(en )
1918-08-06
Lock-actuator for total-proof devices on computing-machines.
US2413884A
(en )
1947-01-07
Manually controlled record punching machine
US1234368A
(en )
1917-07-24
Computing mechanism.
GB509444A
(enExample )
US1485881A
(en )
1924-03-04
Calculating machine
US1883892A
(en )
1932-10-25
Walther flach
US1070142A
(en )
1913-08-12
Calculating and type-writing machine.
GB783849A
(enExample )
US1801470A
(en )
1931-04-21
Writing-computing machine
US2693753A
(en )
1954-11-09
Zero printing control for interpreters
US970798A
(en )
1910-09-20
Cash-register.
GB464133A
(enExample )
GB128965A
(en )
1919-07-10
Improvements in Adding Machines.
GB191305530A
(en )
1914-03-05
Device for Preventing the Depression of More than One Key of the same Group in Cash Registers and like Machines.
GB488079A
(en )
1938-06-30
A line-spacing device for typewriters and like machines