Patent US923150A successfully refreshed from Google Patents.
US923150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Renewable-head railway-rail.
Assignee: Individual
•
Filing: 1908-05-23
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Granted: 1909-06-01
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Expires: 1928-05-23
Abstract
No abstract record available.
Inventors
- 👤 Reese B Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:19
CPC Classifications
E; E01; E01B; E01B5/00; E01B5/02; E01B5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1912-05-31 | 1912-11-30 | 1913-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-05-31 | 1916-11-30 | 1917-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-05-31 | 1920-11-30 | 1921-06-01 | $7700.00 | Window Closed / Lapsed |