Patent US2396423A successfully refreshed from Google Patents.
Patent US5459729C1 successfully refreshed from Google Patents.
US5459729C1
Expired / Lapsed
US
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Digital added main line system
Assignee: Tyco International Ltd Bermuda
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Filing: 1989-07-25
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Granted: 2002-03-19
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Expires: 2009-07-25
Abstract
No abstract record available.
Inventors
- 👤 David C Bliven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:30
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04J; H04J3/00; H04J3/02; H04J3/04; H04J3/18; H04M; H04M11/00; H04M11/06; H04M11/068; H04Q11/0435; H04Q11/0471; H04Q2213/00; H04Q2213/034; H04Q2213/09; H04Q2213/099; H04Q2213/13034; H04Q2213/1305; H04Q2213/1308; H04Q2213/13106; H04Q2213/13174; H04Q2213/1319; H04Q2213/13199; H04Q2213/13204; H04Q2213/13208; H04Q2213/13209; H04Q2213/13216; H04Q2213/13292; H04Q2213/13297; H04Q2213/1332; H04Q2213/13322; H04Q2213/13367; H04Q2213/18; H04Q2213/204
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) | 2005-03-18 | 2005-09-17 | 2006-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-03-18 | 2009-09-17 | 2010-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-03-18 | 2013-09-17 | 2014-03-19 | $7700.00 | Window Closed / Lapsed |