Patent summary
| Abstract | Drawing | Description | Claims Patent number: 1167425 |
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Referenced by
| Patent Number | Title | Issue date |
| 4145118 | Viewing instrument | Mar 20, 1979 |
| Abstract | Drawing | Description | Claims Patent number: 1167425 |
| Patent Number | Title | Issue date |
| 4145118 | Viewing instrument | Mar 20, 1979 |
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