USRE31789F1
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: PHONTEL COMMUNICATIONS Corp
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Filing: 1982-12-28
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Granted: 1995-03-07
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Expires: 2002-12-28
Abstract
No abstract record available.
Inventors
- 👤 Kazuo Hashimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:26
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/57; H04M1/573
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) | 1998-03-06 | 1998-09-05 | 1999-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-06 | 2002-09-05 | 2003-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-06 | 2006-09-05 | 2007-03-07 | $7700.00 | Window Closed / Lapsed |