1. DYNA-DRILL

Serial Number: 85157141
Owner: (REGISTRANT) Smith International, Inc. CORPORATION DELAWARE 16740 Hardy Street Houston TEXAS 77032
Filed on: 10/20/2010

2. DYNA-FORCE

Serial Number: 85126351
Owner: (REGISTRANT) Smith International, Inc. CORPORATION DELAWARE 16740 Hardy Street Houston TEXAS 77032
Filed on: 09/09/2010

3. HYDRA-DRIVE

Serial Number: 75930563
Owner: (REGISTRANT) Smith International, Inc. CORPORATION DELAWARE 16740 Hardy Street Houston TEXAS 77032
Filed on: 02/15/2000

4. I-DRILL

Serial Number: 78236032
Owner: (REGISTRANT) Smith International, Inc. CORPORATION DELAWARE 16740 Hardy Street Houston TEXAS 77032
Filed on: 04/10/2003

5. IDEAS CERTIFIED

Serial Number: 77160520
Owner: (REGISTRANT) Smith International, Inc. CORPORATION DELAWARE 16740 Hardy Street Houston TEXAS 77032
Filed on: 04/19/2007

6. SHALLOW GAS SERIES

Serial Number: 78266604
Owner: (REGISTRANT) Smith International, Inc. CORPORATION DELAWARE 16740 Hardy Street Houston TEXAS 77032
Filed on: 06/24/2003

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