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Chi-Yup An

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TWIN SAVER CO., LTD.

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ELECTRO-MECHANICAL TRANSDUCER

10/477,911 | U.S. Patent Application

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Location ELECTRONIC

Filed Nov. 15, 2003

Examiner DANG D LE

Class 310

Art Group 2834

Patent No. 6,903,474

Case Type Utility - 310/081000

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

Parent PCT/KR02/00502 -

Child 2001/26924

Last Updated: 4 years, 8 months ago

Date	#	Transaction
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ELECTRO-MECHANICAL TRANSDUCER

10/477,911 | U.S. Patent Application

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