GB625106A
(enrdf_load_stackoverflow )
US2091778A
(en )
1937-08-31
Keyboard construction and key control
US2287100A
(en )
1942-06-23
Calculating typing machine with a motor drive
US1657696A
(en )
1928-01-31
A cobpobation
US2433679A
(en )
1947-12-30
Indian currency computing and recording calculator
US2707076A
(en )
1955-04-26
H sharpe
US2229553A
(en )
1941-01-21
Listing adding machine
US1843648A
(en )
1932-02-02
Adding machine
US1333307A
(en )
1920-03-09
Horizontal ruling mechanism for calculating and like machines
GB748825A
(en )
1956-05-09
Improvements in or relating to tabulator mechanism of a typewriter or like machine
US1965192A
(en )
1934-07-03
Cash register
US1118376A
(en )
1914-11-24
Computing and registering mechanism.
GB555659A
(en )
1943-09-01
Improvements in or relating to calculating or like machines
US2225484A
(en )
1940-12-17
Combined typewriting and computing machine
US2141158A
(en )
1938-12-27
Typewriter, typewriter calculating machine, and the like
US1294727A
(en )
1919-02-18
Combined type-writing and computing machine.
GB442771A
(en )
1936-02-12
Improvements in or relating to cash registers and similar accounting machines
US1790472A
(en )
1931-01-27
Computing machine
US1122320A
(en )
1914-12-29
Computing-machine.
GB384759A
(enrdf_load_stackoverflow )
GB190302361A
(en )
1903-12-03
Improvements in Cash Registers.
GB259267A
(enrdf_load_stackoverflow )
GB344084A
(enrdf_load_stackoverflow )
GB362527A
(enrdf_load_stackoverflow )
GB361484A
(enrdf_load_stackoverflow )