US5234280B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic channeling devices
Assignee: Plastic Safety Systems Inc
•
Filing: 1992-03-30
•
Granted: 1997-12-09
•
Expires: 2012-03-30
Abstract
No abstract record available.
Inventors
- 👤 David A Cowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:41
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/60; E01F9/623; E01F9/654; E01F9/688; Y; Y10; Y10S; Y10S248/00; Y10S248/91
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) | 2000-12-08 | 2001-06-09 | 2001-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-12-08 | 2005-06-09 | 2005-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-12-08 | 2009-06-09 | 2009-12-09 | $7700.00 | Window Closed / Lapsed |