US2994255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety barrier for roads
Assignee: Individual
•
Filing: 1957-09-11
•
Granted: 1961-08-01
•
Expires: 1977-09-11
Abstract
No abstract record available.
Inventors
- 👤 Trief Marcel
- 👤 Trief Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:12
CPC Classifications
E; E01; E01F; E01F15/00; E01F15/02; E01F15/08; E01F15/088; E01F15/081; E01F15/083
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE24334C
Cited
US392277A
Cited
US881747A
Cited
US1456080A
Cited
US2011531A
Cited
US1927189A
Cited
US2153392A
Cited
US2249979A
Cited
US2316660A
Cited
US2653450A
Cited
GB683336A
Cited
DK78878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |