GB1055297A
(en )
1967-01-18
Improvements in or relating to calculating and accounting machines
US3400799A
(en )
1968-09-10
High speed type action
GB191403084A
(en )
1915-02-04
Improvements in Adding Machines.
GB191115221A
(en )
1912-06-27
Improvements in Cash Registers.
US2055623A
(en )
1936-09-29
Calculating machine
US3610389A
(en )
1971-10-05
Keyboard machine with sequentially responsive printing means
GB555659A
(en )
1943-09-01
Improvements in or relating to calculating or like machines
GB765291A
(enExample )
GB389841A
(enExample )
US2057161A
(en )
1936-10-13
Calculating machine
GB608988A
(enExample )
US1596022A
(en )
1926-08-17
Typewriting machine
US889671A
(en )
1908-06-02
Total-printing mechanism for listing-machines.
GB156279A
(enExample )
GB423228A
(en )
1935-01-28
Improvements in typewriters
GB438369A
(enExample )
GB273130A
(enExample )
GB631443A
(en )
1949-11-02
Improvements in or relating to accounting machines and similar calculating machines
GB273721A
(enExample )
GB180993A
(enExample )
GB190827249A
(en )
1909-06-03
Improvements in Typewriting Machines.
GB487107A
(en )
1938-06-15
Improvements in shift lock releases for typewriters
GB190620728A
(en )
1907-09-12
Improvements in or relating to Adding or Calculating Machines.
GB136630A
(en )
1919-12-17
Improvements in or relating to Calculating Machines Combined with Typewriters.
GB698327A
(en )
1953-10-14
Improvements in or relating to keyboard operators for typewriters and other like type-selecting machines