GB712751A
(https= )
GB727100A
(https= )
GB909935A
(en )
1962-11-07
Calculating or similar accounting machine
US2651462A
(en )
1953-09-08
Item, total, and repeated registration control mechanism
US2221686A
(en )
1940-11-12
Calculating machine
US1927856A
(en )
1933-09-26
Calculating machine
US2994474A
(en )
1961-08-01
fleming
GB190906428A
(en )
1910-03-17
Improvements in Cash Registers or Accounting Machines.
US1150916A
(en )
1915-08-24
Calculating-machine.
US1864193A
(en )
1932-06-21
Calculating machine
GB265134A
(https= )
GB516693A
(https= )
GB445540A
(https= )
GB712750A
(en )
1954-07-28
Improvements in or relating to calculating machines
GB551994A
(https= )
GB191416001A
(en )
1914-08-17
Improvements in Calculating Machines.
GB190518341A
(en )
1906-07-05
Combined Typewriting and Adding Machine.
GB341435A
(en )
1931-01-09
Improvements in calculating machines
GB191512527A
(en )
1916-10-02
Improvements in or relating to Adding or like Machines.
GB191226772A
(en )
1913-11-26
Improvements in and relating to Calculating Machines.
GB710891A
(https= )
GB191214777A
(en )
1912-11-07
Improvements in or relating to Adding or like Machines.
GB295632A
(https= )
GB435286A
(https= )
GB608989A
(en )
1948-09-23
Improvements in calculating machines