Patent US3384051A successfully refreshed from Google Patents.
US3384051A
Expired / Lapsed
US
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Electrostatic liquid developer system
Assignee: Harris Graphics Corp
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Filing: 1966-09-21
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Granted: 1968-05-21
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Expires: 1986-09-21
Abstract
No abstract record available.
Inventors
- 👤 Hunstiger Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:00
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/108
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1987183A
Cited
DE908193C
Cited
GB788558A
Cited
US2874674A
Cited
US3276896A
Cited
US3133340A
Cited
US3196069A
Cited
US3179536A
Cited
US3299787A
Cited
US3249088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |