The Best Printing Calculator
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Two automatic printing calculators have been used to monitor the output of the LKB 8600 Reaction Rate Analyser in routine serum enzyme assays. The results produced by both instruments correlated well with results produced manually, but neither was entirely …
… Description. This invention relates to a thermal printing calculator. In the conventional printing calculators, data entries from a keyboard unit and operation results obtained by computations are printed on a roll of paper which is supported within the interior of the calculator …
My present invention relates generally to a magnifying device and more particularly to a magnifying device for attachment to adding machines 'and ' printing calculators and the like, of the type wherein the arithmetical data which has been fed into the machine is imprinted …
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