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ESSA CO., LTD.

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Kwang Hee Lee

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APPARATUS FOR TREATMENTING OF SEWAGE USING SEMI-BATCH AND METHOD THEREOF

12/158,437 | U.S. Patent Application

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Location ELECTRONIC

Filed June 20, 2008

Examiner FREDDIE GARY PRINCE JR

Class 210

Art Group 1797

Patent No. 7,674,380

Case Type Utility - 210/605000

Status Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362

Parent PCT/KR2006/004468 Published

Child 10-2005-0134767

Last Updated: 2 years, 5 months ago

Date	#	Transaction
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APPARATUS FOR TREATMENTING OF SEWAGE USING SEMI-BATCH AND METHOD THEREOF

12/158,437 | U.S. Patent Application

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