Patent US2695754A successfully refreshed from Google Patents.
US2695754A
Expired / Lapsed
US
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Railway track sleeper
Assignee: Walter Bau AG
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Filing: 1951-07-03
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Granted: 1954-11-30
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Expires: 1971-07-03
Abstract
No abstract record available.
Inventors
- 👤 Karig Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:43
CPC Classifications
E; E01; E01B; E01B3/00; E01B3/28; E01B3/32; E01B3/34; B; B28; B28B; B28B23/00; B28B23/02; B28B23/04; B28B23/043; B28B23/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1618056A
Cited
US2075633A
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US2538437A
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US2413990A
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US2397728A
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US2538443A
Cited
US2495100A
Cited
US2535100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |