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<element name="WarrantsIssuableOnConversionOfSubordinatedConvertibleNotesMember" id="inrd_WarrantsIssuableOnConversionOfSubordinatedConvertibleNotesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/> 
<element name="CommonStockOptionsAndGrantsMember" id="inrd_CommonStockOptionsAndGrantsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" abstract="true" nillable="true"/>
</schema>
