US2974607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track surfacing assembly and method
Assignee: Nordberg Manufacturing Co
•
Filing: 1957-12-13
•
Granted: 1961-03-14
•
Expires: 1977-12-13
Abstract
No abstract record available.
Inventors
- 👤 Henry H Talboys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:28
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/12; E01B27/13; E01B27/16; E01B27/17; E01B2203/00; E01B2203/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734463A
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US1096357A
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US1599622A
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US1616084A
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FR657880A
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AU1976929A
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US2412463A
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US2538145A
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US2505606A
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GB753519A
Cited
US2814119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |