US3028148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highway railing
Assignee: LEHIGH Inc
•
Filing: 1958-02-27
•
Granted: 1962-04-03
•
Expires: 1978-02-27
Abstract
No abstract record available.
Inventors
- 👤 Richard W Crannell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:28
CPC Classifications
E; E01; E01F; E01F15/00; E01F15/02; E01F15/04; E01F15/0461
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US399021A
Cited
US2128294A
Cited
US2176530A
Cited
US2136415A
Cited
US2403330A
Cited
US2403541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |