US4581516B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4581516B1 - - Google Patents
Assignee: Deutsche Bank Trust Co Americas
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Filing: 1983-07-20
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Granted: 1990-01-23
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Expires: 2003-07-20
Abstract
No abstract record available.
Inventors
- 👤 O Hatch Bruce
- 👤 A Spaulding Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:55
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32; H05H1/34; H05H1/28; H05H1/3405; H05H1/3442; H05H1/3468
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) | 1993-01-22 | 1993-07-24 | 1994-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-22 | 1997-07-24 | 1998-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-22 | 2001-07-24 | 2002-01-23 | $7700.00 | Window Closed / Lapsed |