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US2673337A
|
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Amplifier system utilizing saturable magnetic elements
|
|
GB722215A
|
|
Improvements in and relating to electron discharge apparatus
|
|
GB706603A
|
|
Statistical card feeding mechanism
|
|
GB714305A
|
|
Set-up device for record-controlled tabulators
|
|
GB702727A
|
|
Feed mechanism for tabulating cards
|
|
GB723144A
|
|
Printing machine
|
|
US2658972A
|
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Mechanical bi-stable device
|
|
GB694881A
|
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Improvements in statistical card controlled machines
|
|
GB699815A
|
|
Improvements in statistical card controlled machines
|
|
US2625225A
|
|
Card punch and verifier
|
|
US2632644A
|
|
Statistical card feeding mechanism
|
|
US2603675A
|
|
System for suppressing electromagnetic interference
|
|
US2602530A
|
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Bicolor ribbon control for accounting machines
|
|
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|
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Carriage moving and positioning means for accounting machines
|
|
US2627333A
|
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Front-feed paer carriage construction for accounting and the like machines
|
|
US2653665A
|
|
Statistical card punch and verifier
|
|
US2585102A
|
|
Paper guide means for business machines
|
|
GB688476A
|
|
Improvements in or relating to printing machines, particularly addressing machines
|
|
US2634040A
|
|
Foldable carton
|
|
US2617649A
|
|
Throat mechanism for statistical card machines
|
