Patent US3004716A successfully refreshed from Google Patents.
US3004716A
Expired / Lapsed
US
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Railway rail securing means
Assignee: Lockspike Ltd
•
Filing: 1957-07-23
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Granted: 1961-10-17
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Expires: 1977-07-23
Abstract
No abstract record available.
Inventors
- 👤 Pande-Rolfsen Per
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:52
CPC Classifications
E; E01; E01B; E01B9/00; E01B9/38; E01B9/44; E01B9/46; E01B9/48; E01B9/483; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1457; Y10T24/1459; Y10T24/1461; Y10T24/1463; Y10T24/1467
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US193389A
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US485097A
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US1367401A
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US1942464A
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US2154151A
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US2162365A
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FR835674A
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US2816715A
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US2822593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |