GB608694A
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US2230682A
(en )
1941-02-04
Interlock for cash registers
US2079355A
(en )
1937-05-04
Automatic overdraft device for
US2261341A
(en )
1941-11-04
Adding and listing machine
US3086701A
(en )
1963-04-23
Capellaro
GB420807A
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1900-01-01
US1630814A
(en )
1927-05-31
Cash register
GB434369A
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US1966657A
(en )
1934-07-17
von pein
GB438369A
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GB530120A
(enrdf_load_stackoverflow )
GB191511254A
(en )
1916-08-04
Improvements in Combined Typewriting and Computing Machines.
GB453280A
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GB783849A
(enrdf_load_stackoverflow )
GB629975A
(enrdf_load_stackoverflow )
GB604165A
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GB417991A
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1900-01-01
GB483093A
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GB416498A
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GB285885A
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GB682295A
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GB442856A
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GB427722A
(enrdf_load_stackoverflow )
GB190828253A
(en )
1909-12-28
Improvements in and relating to Mechanical Calculators.
GB407054A
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