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US2742855A
|
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Print wheel setting mechanism
|
|
GB713338A
|
|
Electrical relay calculating machine
|
|
US2490963A
|
|
Relay
|
|
US2602451A
|
|
Card register and the like
|
|
GB630559A
|
|
Improvements in or relating to electrical computing apparatus
|
|
GB614008A
|
|
Improvements in or relating to card files and the like
|
|
GB612232A
|
|
Improvements in or relating to electric relays
|
|
GB622740A
|
|
Improvements in or relating to type-wheel printing devices
|
|
GB624862A
|
|
Improvements in or relating to perforation of sheet material for use in computing orlike machines
|
|
US2337553A
|
|
Device for operating machines from control tapes
|
|
US2350893A
|
|
Type for typewriting machines, perforation or printing as well as interpretation system for characters
|
|
GB490000A
|
|
Improvements in key-boards of calculating machines
|
|
US2191567A
|
|
Calculating machine
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