Patent US2777641A successfully refreshed from Google Patents.
US2777641A
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Rehabilitation of enlarged spike holes in rail fastenings
Assignee: Individual
•
Filing: 1951-10-24
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Granted: 1957-01-15
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Expires: 1971-10-24
Abstract
No abstract record available.
Inventors
- 👤 Snyder Jacob Rush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:39
CPC Classifications
E; E01; E01B; E01B9/00; E01B9/02; E01B9/04; E01B9/14; E01B9/16; F; F16; F16B; F16B13/00; F16B13/02; F16B13/14; F16B13/141; F16B2013/147; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49746; Y10T29/49826; Y10T29/49885; Y10T29/49945
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |