US3368759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway tracks
Assignee: Swedish Rail System AB SRS
•
Filing: 1966-03-04
•
Granted: 1968-02-13
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Expires: 1986-03-04
Abstract
No abstract record available.
Inventors
- 👤 Olson Erik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:12
CPC Classifications
E; E01; E01B; E01B5/00; E01B5/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US795622A
Cited
US904438A
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US913238A
Cited
US1012942A
Cited
US1056201A
Cited
US1086262A
Cited
US1112613A
Cited
US2035933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |