اختراعات داریوش سمنانی

PATENTS:

• Yarn Grading Apparatus, IR Patent No.: 38504267, July 2006.
• Asphalt Grid with Wovent Structure, IR Patent No.: 38504372, July 2006.
• Geomemberance of reiforced cement composite, IR Patent No.: 38504373, July 2006.
• Apparatus of heat and moisture measurement, IR Patent No.: 389110151, February 2011.