Patent US2146445A successfully refreshed from Google Patents.
US2146445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End post construction for highway guardrails and the like
Assignee: Mullins Manufacturing Corp
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Filing: 1937-04-16
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Granted: 1939-02-07
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Expires: 1957-04-16
Abstract
No abstract record available.
Inventors
- 👤 Edward J Russert
- 👤 Clare L Hinsdale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:01
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)
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) | 1942-02-06 | 1942-08-08 | 1943-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-06 | 1946-08-08 | 1947-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-06 | 1950-08-08 | 1951-02-07 | $7700.00 | Window Closed / Lapsed |