US4839604B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4839604B1 - - Google Patents
Assignee: NEC Corp
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Filing: 1988-03-16
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Granted: 1992-12-01
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Expires: 2008-03-16
Abstract
No abstract record available.
Inventors
- 👤 Tanahashi Toshio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:00
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/04; G06F1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-01 | 1996-06-01 | 1996-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-01 | 2000-06-01 | 2000-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-01 | 2004-06-01 | 2004-12-01 | $7700.00 | Window Closed / Lapsed |