US3380428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic guide post
Assignee: KENNETH A ABRAMS
•
Filing: 1965-12-20
•
Granted: 1968-04-30
•
Expires: 1985-12-20
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Abrams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:29
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/60; E01F9/604; E01F9/615; E01F9/617; E01F9/688
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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CH281360A
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US2817308A
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FR1150240A
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FR1235337A
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US3021755A
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US2957169A
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GB959082A
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US3026641A
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US3132624A
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US3233352A
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US3147734A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |