Patent US4596900B2 successfully refreshed from Google Patents.
US4596900B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phone-line-linked tone-operated control device
Assignee: PMJ FAMILY LP
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Filing: 1983-06-23
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Granted: 1997-08-26
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Expires: 2003-06-23
Abstract
No abstract record available.
Inventors
- 👤 Philip S Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:53
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/007; Y; Y10; Y10S; Y10S379/00; Y10S379/909
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) | 2000-08-25 | 2001-02-24 | 2001-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-25 | 2005-02-24 | 2005-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-25 | 2009-02-24 | 2009-08-26 | $7700.00 | Window Closed / Lapsed |