Patent US 4578687A
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| Patent number | US 4578687A (click link for details and documents via Google Patents) |
|---|---|
| Title | Ink jet printhead having hydraulically separated orifices |
| Inventors | Frank L. Cloutier, Paul H. McClelland, William R. Boucher, Gary Siewell |
| Company | Hewlett Packard |
| Filing date | 1984-03-09 |
| Grant date | 1986-03-25 |