Patent US5043736B1 successfully refreshed from Google Patents.
US5043736B1
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US
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Cellular position location system
Assignee: EASTERN INVESTMENTS AN ALASKA LLC LLC
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Filing: 1990-07-27
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Granted: 1994-09-06
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Expires: 2010-07-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph D Darnell
- 👤 Claude C Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:07
CPC Classifications
G; G01; G01S; G01S5/00; G01S5/0009; G01S5/0018; G01S5/0027; G01S19/00; G01S19/38; G01S19/39; G01S19/42; G08; G08B; G08B21/00; G08B21/18; G08B21/22; H; H04; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/185; H04B7/1853; H04B7/18545; H04B7/18547; H04B7/1855; H04B7/18552; G01S2205/00; G01S2205/001; G01S2205/008
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) | 1997-09-05 | 1998-03-07 | 1998-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-05 | 2002-03-07 | 2002-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-05 | 2006-03-07 | 2006-09-06 | $7700.00 | Window Closed / Lapsed |