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F ng (a) | A oe a) +} ‘qnere is attached a photegreph af two used fl : 3 Sl were forwarded to the Iabaratory of this Bureau for connection mith an tnveatigetire mat Mare ible whether or pot your: having the appearance denestic and foreign fran your factory. Otherulss, any ’ eb bt be of assintanoe | in n identi tying ths / Banufacturer of these a: requested, at "All catalogs and available detailed technica doseriptions =<xpf te would be of great assistance ap confidene EXéal refershos terial in ‘this Inbora tory. ” Please consider: this inquiry as confidential. Ie ig: “ deotred that you return the attached photograph with your response | Barked for the abtention of the Fad Taboratorye . "any assistance you ofa renter in this imtter wll be grestly apeclateds