GB509206A
(https= )
US2033087A
(en )
1936-03-03
Calculating machine
GB474543A
(https= )
GB479234A
(https= )
1900-01-01
GB650357A
(en )
1951-02-21
Differential setting mechanism for cash registers or similar accounting machines
GB783849A
(https= )
US2142286A
(en )
1939-01-03
Calculating or adding machine
US1395983A
(en )
1921-11-01
Fbank edward guy
GB1197609A
(en )
1970-07-08
Improvements in or relating to Calculating Machines, Cash Registers or the like.
GB431623A
(https= )
GB612392A
(en )
1948-11-11
Improvements in or relating to accounting machines and similar calculating machines
US3716694A
(en )
1973-02-13
Blocking device for registering business machines
GB191116725A
(en )
1912-07-18
Improvements in or relating to Cash Register Machines.
GB191105283A
(en )
1911-11-30
Improvements in Calculating Machines.
US3040977A
(en )
1962-06-26
Function control mechanism for manual adding machines
GB1299244A
(en )
1972-12-13
Improvements in postage meters
GB207858A
(https= )
GB191120333A
(en )
1912-09-12
Improvements in and relating to Printing Mechanism for Cash Registers and the like.
GB528567A
(https= )
GB509444A
(https= )
GB923383A
(https= )
GB379822A
(https= )
GB657604A
(en )
1951-09-19
Improvements in or relating to accounting and similar calculating machines
GB982721A
(en )
1965-02-10
Adding machine
GB465849A
(en )
1937-05-18
A nought-entering mechanism for "ten key" adding machines