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GB1402600A
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Sensing device for co-operation with the sheets of loose leaf journals and ledgers in bokkeeping and typewriting machines
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FR1297687A
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Control device of a pin recorder of an accounting machine or of a calculating machine
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GB932097A
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An adjustment device for a pin-register of an accounting or calculating machine
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FR1284345A
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Improvements in feeler devices for sheet stop mechanisms introduced in accounting machines and typewriters
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US3137379A
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Sensing device
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GB928824A
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A printing line sensing device
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FR1264915A
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Improvements made to devices for reading indications marked on a support with production of electrical pulses corresponding to these indications
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ES259958A1
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Apparatus for reading characters recorded on a carrier by producing corresponding electrical impulses
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FR1167878A
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Transport wheel for typewriter or accountant
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GB828793A
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Improvements in or relating to typewriter accessories
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FR1121009A
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Introduction device for accounting machines and typewriters
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AT184386B
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Booking engine
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FR1110627A
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Improvements to accounting machines to calculate
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GB697914A
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Improvements in and relating to a sheet feeding and guiding device for a typewriter
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GB677473A
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Card index boxes
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FR1013466A
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Improvements to files
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GB671244A
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Improvements in or relating to devices for facilitating book-keeping
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FR1008482A
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Improvements made to the clamps to maintain several superimposed sheets, in particular for bookkeeping
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US2539622A
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Typewriting machine with a second ribbon and means for guiding the same
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FR929843A
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Desk table with part of the top that can be folded back into the niche space and with a retractable typewriter
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