GB493413A
(https= )
US2665070A
(en )
1954-01-05
Binary-octal-decimal computer
US1415174A
(en )
1922-05-09
horton
US3232223A
(en )
1966-02-01
Printing mechanism for business machines
GB937146A
(en )
1963-09-18
Data-marking machine
GB650357A
(en )
1951-02-21
Differential setting mechanism for cash registers or similar accounting machines
GB814171A
(https= )
US2306247A
(en )
1942-12-22
Calculating machine
GB190525478A
(en )
1906-05-10
Improvements in Counting or Totalising Apparatus.
US3620446A
(en )
1971-11-16
Printing device for a calculating machine
GB144367A
(https= )
US2291949A
(en )
1942-08-04
Listing adding machine
GB1094174A
(en )
1967-12-06
Mechanism for the electro-mechanical conversion of binary coded values into decimal values
US764449A
(en )
1904-07-05
Apparatus for registering monetary transactions.
GB737050A
(en )
1955-09-21
Computing machine
GB319980A
(https= )
GB190401286A
(en )
1904-05-12
Improvements in Computing and Recording Machines.
GB346465A
(https= )
GB217194A
(https= )
US765573A
(en )
1904-07-19
Composing-disk for cash-registers or adding-machines.
GB753067A
(https= )
GB735178A
(https= )
GB677950A
(https= )
GB189902859A
(en )
1900-02-08
Improvements in Cash Indicating and Recording Apparatus or Check Tills.
GB328332A
(https= )