US1208702A
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Computing-machine.
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US1220029A
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Calculating-machine.
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US1162667A
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Calculating-machine.
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US1149872A
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Calculating-machine.
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US1215219A
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Calculating-machine.
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US1118829A
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Calculating-machine.
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US1134780A
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Carrying mechanism for calculating-machines.
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GB191408867A
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Improvements in Setting Mechanisms for Calculating Machines of the Pin-wheel and Cam-disc Type.
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GB191408081A
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Improvements in and relating to Calculating Machines.
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GB191407963A
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Improvements in Transfer Mechanism for Calculating and like Machines.
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AT68991B
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Calculating machine with a revolution counter whose counting disks have two rows of digits offset from one another by a value division.
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US1118830A
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Calculating-machine.
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US1160015A
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Calculating-machine.
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GB191404880A
|
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Improvements in and relating to Calculating Machines.
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US1100631A
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Calculating-machine.
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GB191400037A
|
|
Improvements in Calculating Machines.
|
US1098193A
|
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Carrying mechanism for calculating-machines.
|
US1088486A
|
|
Calculating-machine.
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GB191319815A
|
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Improvements in Calculating Machines having Revolutions Counting Mechanisms.
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GB191319300A
|
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Improvements in and relating to Calculating Machines.
|