Patent US3472676A successfully refreshed from Google Patents.
US3472676A
Expired / Lapsed
US
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Process for developing electrostatic charge patterns
Assignee: Gevaert Photo Producten NV
•
Filing: 1967-10-11
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Granted: 1969-10-14
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Expires: 1987-10-11
Abstract
No abstract record available.
Inventors
- 👤 Paul Maria Cassiers
- 👤 Andre Rott
- 👤 Louis Achilles Meeussen
- 👤 Jozef Leonard Van Engeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:11
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/101; G03G15/102; G03G9/00; G03G9/16; G03G9/18
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |