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Patent US2611545A successfully refreshed from Google Patents.
US2611545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railroad tie
Assignee: Individual
•
Filing: 1949-04-30
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Granted: 1952-09-23
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Expires: 1969-04-30
Abstract
No abstract record available.
Inventors
- 👤 William W Bartlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:55
CPC Classifications
E; E01; E01B; E01B3/00; E01B3/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |