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US4777596B1
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Assignee: PRODUCTIVITY SOFTWARE INTERNATIONAL Inc
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Filing: 1986-07-02
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Granted: 1996-06-25
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Expires: 2006-07-02
Abstract
No abstract record available.
Inventors
- 👤 Gedaliah R Shaffer
- 👤 Joseph Shurpin
- 👤 Lawrence M Parks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:05
CPC Classifications
G; G06; G06F; G06F40/00; G06F40/20; G06F40/274
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-06-25 | 1999-12-25 | 2000-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-06-25 | 2003-12-25 | 2004-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-06-25 | 2007-12-25 | 2008-06-25 | $7700.00 | Window Closed / Lapsed |