US890931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-brake-control mechanism.
Assignee: Individual
•
Filing: 1907-03-30
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Granted: 1908-06-16
•
Expires: 1927-03-30
Abstract
No abstract record available.
Inventors
- 👤 Harold Rowntree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:52
CPC Classifications
B; B60; B60T; B60T15/00; B60T15/02; B60T15/04; B60T15/043
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) | 1911-06-16 | 1911-12-16 | 1912-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-06-16 | 1915-12-16 | 1916-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-06-16 | 1919-12-16 | 1920-06-16 | $7700.00 | Window Closed / Lapsed |