| PATENT ASSIGNEE'S COUNTRY | Japan |
| UPDATE | 07.99 |
| PATENT ASSIGNEE | NGK Spark Plug (Nagoya) |
| PATENT CLAIMS |
- Ag (50-80%) - In (5-20%) - Ti (0.5-3%) - Cu (15-50%) - Ni (0.3-1.2 %) |
| PATENT PHOTOCOPY | Available on request |
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