US4473980B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4473980B1 - - Google Patents
Assignee: ECON Inc
•
Filing: 1980-12-17
•
Granted: 1992-12-01
•
Expires: 2000-12-17
Abstract
No abstract record available.
Inventors
- 👤 J Foster Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:41
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/04; E06B3/28; Y; Y10; Y10S; Y10S52/00; Y10S52/04
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) | 1995-12-01 | 1996-06-01 | 1996-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-01 | 2000-06-01 | 2000-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-01 | 2004-06-01 | 2004-12-01 | $7700.00 | Window Closed / Lapsed |