GB684539A
(https= )
US1913510A
(en )
1933-06-13
Calculating machine
US2593666A
(en )
1952-04-22
Key lock means for cash reg
US970798A
(en )
1910-09-20
Cash-register.
US2027449A
(en )
1936-01-14
Calculating machine and cash
GB240156A
(https= )
US1883892A
(en )
1932-10-25
Walther flach
GB355288A
(https= )
US1840535A
(en )
1932-01-12
shipley
US3171594A
(en )
1965-03-02
And similar machines
GB173219A
(https= )
US2926846A
(en )
1960-03-01
Predetermined carriage shifting and dividend
GB417991A
(https= )
1900-01-01
GB347271A
(https= )
GB190327803A
(en )
1904-09-22
Improvements in Cash Registers.
GB604165A
(https= )
GB438369A
(https= )
GB285500A
(en )
1929-05-21
Improvements in or relating to cash registers
GB217910A
(https= )
GB274344A
(https= )
GB173042A
(https= )
GB713408A
(https= )
GB539453A
(https= )
GB672771A
(https= )
GB516693A
(https= )