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Application filed by Londex LtdfiledCriticalLondex Ltd
Application grantedgrantedCritical
Publication of AT168865BpublicationCriticalpatent/AT168865B/de
B41F33/00—Indicating, counting, warning, control or safety devices
AT168865D1948-02-281949-09-20Vorrichtung zum Messen des Flächeninhaltes von lichtabsorbierenden oder lichtundurchlässigen flächenhaften Gebilden
AT168865B
(de)