GB1073852A
(https= )
US2160361A
(en )
1939-05-30
Calculating machine
US3467007A
(en )
1969-09-16
Electrical controls for a multiple couple printing press
US2141333A
(en )
1938-12-27
Cash register
US2930523A
(en )
1960-03-29
Totalizer control mechanism for accounting machines
US2678161A
(en )
1954-05-11
Item count means fob adding-listing
US2646929A
(en )
1953-07-28
Gourdon
US2987246A
(en )
1961-06-06
Wagemann
US2060191A
(en )
1936-11-10
Accounting machine
US2088662A
(en )
1937-08-03
Accounting machine
US2536267A
(en )
1951-01-02
Line spacing mechanism for accounting machines
US3620446A
(en )
1971-11-16
Printing device for a calculating machine
GB606627A
(https= )
GB528737A
(https= )
US2798672A
(en )
1957-07-09
Machine for calculating avoirdupois weights
US2248202A
(en )
1941-07-08
Combined typewriting and computing
US3601044A
(en )
1971-08-24
Printer mechanism
US1278458A
(en )
1918-09-10
Combined type-writing and computing machine.
GB749504A
(https= )
US1133029A
(en )
1915-03-23
Computing and writing machine.
GB344084A
(https= )
GB791715A
(https= )
GB604165A
(https= )
GB971662A
(https= )
GB190828253A
(en )
1909-12-28
Improvements in and relating to Mechanical Calculators.