ES83793U - Improved sheet, marginal drilling, to control all types of data in manual selection files (Machine-translation by Google Translate, not legally binding)
- Google Patents
Improved sheet, marginal drilling, to control all types of data in manual selection files (Machine-translation by Google Translate, not legally binding)
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Individual
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Perforating, Stamping-Out Or Severing By Means Other Than Cutting
(AREA)
Abstract
Improved sheet, marginal drilling, to control all types of data in manual selection files, whose selection is due to the transformation in notch of the hole of the marginal drilling affected by the data of interest, with which all the chips concerned will fall by yes only when they are all threaded by a through punch through similar perforation, while those that keep such a perforation without notching to the board of the sheet, characterized by doubling the marginal perforation that is formed by two rows whose The holes correspond to the lateral position, duplicating the data capacity to be controlled by the card. (Machine-translation by Google Translate, not legally binding)
ES0083793U1960-10-271960-10-27Improved sheet, marginal drilling, to control all types of data in manual selection files (Machine-translation by Google Translate, not legally binding)
PendingES83793U
(en)
Improved sheet, marginal drilling, to control all types of data in manual selection files (Machine-translation by Google Translate, not legally binding)
Improved sheet, marginal drilling, to control all types of data in manual selection files (Machine-translation by Google Translate, not legally binding)
Improved sheet, marginal drilling, to control all types of data in manual selection files (Machine-translation by Google Translate, not legally binding)