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Patent US2479932A successfully refreshed from Google Patents.
US2479932A
Expired / Lapsed
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Rail anticreep device
Assignee: G & H Rail Controls Inc
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Filing: 1945-08-13
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Granted: 1949-08-23
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Expires: 1965-08-13
Abstract
No abstract record available.
Inventors
- 👤 Caddis J Hunnicutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:30
CPC Classifications
E; E01; E01B; E01B13/00; E01B13/02; E01B2201/00; E01B2201/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1319168A
Cited
US1260563A
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US1249161A
Cited
US1328553A
Cited
US1338431A
Cited
US1602813A
Cited
US1995020A
Cited
US1863145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |