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Choi; Dai-Shik Patent Filings

Choi; Dai-Shik

Patent Applications and Registrations

Patent applications and USPTO patent grants for Choi; Dai-Shik.The latest application filed is for "selective mining from horizontal holes".

Company Profile
0.2.0
  • Choi; Dai-Shik - Ponca City OK
*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.
Patent Activity
PatentDate
Selective mining from horizontal holes
Grant 4,496,191 - Choi , et al. January 29, 1
1985-01-29
Method of determining mine roof stability
Grant 4,318,302 - Choi March 9, 1
1982-03-09

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