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US2474281A
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US
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Railroad spike
Assignee: GENNARO GIUDICE
•
Filing: 1947-08-27
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Granted: 1949-06-28
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Expires: 1967-08-27
Abstract
No abstract record available.
Inventors
- 👤 Ramon A Ruiz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:31
CPC Classifications
E; E01; E01B; E01B9/00; E01B9/02; E01B9/04; E01B9/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1060543A
Cited
US1433206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-27 | 1952-12-27 | 1953-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-27 | 1956-12-27 | 1957-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-27 | 1960-12-27 | 1961-06-28 | $7700.00 | Window Closed / Lapsed |