US4697280B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4697280B1 - - Google Patents
Assignee: Wisconsin Alumni Research Foundation
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Filing: 1984-09-06
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Granted: 1990-07-17
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Expires: 2004-09-06
Abstract
No abstract record available.
Inventors
- 👤 C Zarnstorff William
- 👤 N Ranallo Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:32
CPC Classifications
H; H05; H05G; H05G1/00; H05G1/08; H05G1/26; H05G1/265; G; G01; G01T; G01T1/00; G01T1/16; G01T1/24; G01T1/247; G01T7/00; G01T7/005
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) | 1993-07-16 | 1994-01-15 | 1994-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-16 | 1998-01-15 | 1998-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-16 | 2002-01-15 | 2002-07-17 | $7700.00 | Window Closed / Lapsed |