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(en )
1961-11-21
Allward
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(en )
1961-11-14
Complemental keyboard
US2756935A
(en )
1956-07-31
Pence differential mechanism
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(en )
1941-11-04
Adding and listing machine
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(en )
1918-07-02
Adding-machine.
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(en )
1961-05-02
Capel
GB469034A
(cg-RX-API-DMAC10.html )
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(en )
1953-02-17
Zero stop mechanism
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(en )
1912-02-06
Adding and listing machine.
GB768516A
(cg-RX-API-DMAC10.html )
GB219923A
(cg-RX-API-DMAC10.html )
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(en )
1934-02-13
Cash register
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(en )
1954-12-28
Special counter mechanism
GB671615A
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1952-05-07
Improvements in or relating to accumulators for accounting machines
GB197352A
(cg-RX-API-DMAC10.html )
GB191213037A
(en )
1912-11-22
Improvements in and relating to Adding and Transaction-counting Mechanism for Cash Registers, or Computing or Registering Machines.
GB238901A
(cg-RX-API-DMAC10.html )
GB352731A
(cg-RX-API-DMAC10.html )
GB353292A
(cg-RX-API-DMAC10.html )
GB875275A
(cg-RX-API-DMAC10.html )
1900-01-01
GB753841A
(cg-RX-API-DMAC10.html )
GB124693A
(cg-RX-API-DMAC10.html )
GB680288A
(cg-RX-API-DMAC10.html )
GB424420A
(cg-RX-API-DMAC10.html )
1900-01-01
GB191504131A
(en )
1916-03-16
Improvements in or relating to Calculating Machines.