GB778643A
(enrdf_load_stackoverflow )
US3009634A
(en )
1961-11-21
Allward
US3008637A
(en )
1961-11-14
Complemental keyboard
US2756935A
(en )
1956-07-31
Pence differential mechanism
GB479234A
(enrdf_load_stackoverflow )
1900-01-01
US2261341A
(en )
1941-11-04
Adding and listing machine
US1270855A
(en )
1918-07-02
Adding-machine.
US2982469A
(en )
1961-05-02
Capel
GB469034A
(enrdf_load_stackoverflow )
US2628780A
(en )
1953-02-17
Zero stop mechanism
US1016308A
(en )
1912-02-06
Adding and listing machine.
GB768516A
(enrdf_load_stackoverflow )
US1242280A
(en )
1917-10-09
Keyboard mechanism for cash-registers.
GB219923A
(enrdf_load_stackoverflow )
US2698138A
(en )
1954-12-28
Special counter mechanism
GB671615A
(en )
1952-05-07
Improvements in or relating to accumulators for accounting machines
GB197352A
(enrdf_load_stackoverflow )
GB191213037A
(en )
1912-11-22
Improvements in and relating to Adding and Transaction-counting Mechanism for Cash Registers, or Computing or Registering Machines.
GB238901A
(enrdf_load_stackoverflow )
GB491465A
(enrdf_load_stackoverflow )
GB353292A
(enrdf_load_stackoverflow )
GB875275A
(enrdf_load_stackoverflow )
1900-01-01
GB753841A
(enrdf_load_stackoverflow )
GB124693A
(enrdf_load_stackoverflow )
GB680288A
(enrdf_load_stackoverflow )