GB414248A
(https= )
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
US2433679A
(en )
1947-12-30
Indian currency computing and recording calculator
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
US1274730A
(en )
1918-08-06
Lock-actuator for total-proof devices on computing-machines.
US1072769A
(en )
1913-09-09
Cash-register.
US1234368A
(en )
1917-07-24
Computing mechanism.
GB509444A
(https= )
US2330270A
(en )
1943-09-28
Register
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
(https= )
US1801470A
(en )
1931-04-21
Writing-computing machine
US963727A
(en )
1910-07-05
Calculating attachment for type-writing machines.
US2693753A
(en )
1954-11-09
Zero printing control for interpreters
GB807114A
(en )
1959-01-07
Improvements in and relating to proportional spacing mechanism for typewriters
US970798A
(en )
1910-09-20
Cash-register.
GB128965A
(en )
1919-07-10
Improvements in Adding Machines.
GB459812A
(https= )
GB971662A
(https= )