US4697884B1
Expired / Lapsed
US
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US4697884B1 - - Google Patents
Assignee: ABB Asea Brown Boveri Ltd
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Filing: 1986-09-17
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Granted: 1990-08-28
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Expires: 2006-09-17
Abstract
No abstract record available.
Inventors
- 👤 Amstutz Hermann
- 👤 Heimgartner Dieter
- 👤 Kaufman Meinolph
- 👤 J Scheffer Terry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:49
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/17; G02F1/13; G02F1/137; G02F1/139; G02F1/1396; G02F1/1397
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) | 1993-08-27 | 1994-02-26 | 1994-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-27 | 1998-02-26 | 1998-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-27 | 2002-02-26 | 2002-08-28 | $7700.00 | Window Closed / Lapsed |