Patent US 4030838A
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| Patent number | US 4030838A |
|---|---|
| Title | Photometer mode indicator |
| Inventors | Jon Leroy Fessler |
| Company | Tektronix Inc |
| Filing date | 1976-03-01 |
| Grant date | 1977-06-21 |
| Cites |
| Patent number | US 4030838A |
|---|---|
| Title | Photometer mode indicator |
| Inventors | Jon Leroy Fessler |
| Company | Tektronix Inc |
| Filing date | 1976-03-01 |
| Grant date | 1977-06-21 |
| Cites |