US4673609B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Undirectional panel
Assignee: Contra Vision Ltd
•
Filing: 1985-07-29
•
Granted: 1995-07-25
•
Expires: 2005-07-29
Abstract
No abstract record available.
Inventors
- 👤 George Roland Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:12
CPC Classifications
G; G09; G09F; G09F7/00; B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10165; B32B17/10247; B44; B44C; B44C1/00; B44C1/10; B44C1/105; B44C1/16; B44C1/165; B44C1/17; B44C3/00; B44C3/005; B44C3/02; B44C5/00; B44C5/04; B44C5/0446; B44F; B44F1/00; B44F1/06; B44F1/08; B44F1/10; G09F13/00; E; E06; E06B; E06B9/00; E06B9/24; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24273; Y10T428/24281; Y10T428/24289; Y10T428/24298; Y10T428/24306; Y10T428/24314; Y10T428/24322; Y10T428/24331; Y10T428/24479; Y10T428/24595; Y10T428/24603; Y10T428/24628; Y10T428/24736; Y10T428/24752; Y10T428/24769; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24876; Y10T428/24893; Y10T428/24909
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1998-07-24 | 1999-01-23 | 1999-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-24 | 2003-01-23 | 2003-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-24 | 2007-01-23 | 2007-07-25 | $7700.00 | Window Closed / Lapsed |