| Original language | English |
|---|---|
| Patent number | 7,487,461 |
| IPC | U.S. Patent |
| Publication status | Published - 3 Feb 2009 |
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Shumin Zhai (Inventor), Per Ola Kristensson (Inventor)
Research output: Patent
| Original language | English |
|---|---|
| Patent number | 7,487,461 |
| IPC | U.S. Patent |
| Publication status | Published - 3 Feb 2009 |