Patent US930851A successfully refreshed from Google Patents.
US930851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-bearing for high speeds.
Assignee: Individual
•
Filing: 1906-08-13
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Granted: 1909-08-10
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Expires: 1926-08-13
Abstract
No abstract record available.
Inventors
- 👤 Sebastian Ziani De Ferranti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:19
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/106
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) | 1912-08-09 | 1913-02-08 | 1913-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-08-09 | 1917-02-08 | 1917-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-08-09 | 1921-02-08 | 1921-08-10 | $7700.00 | Window Closed / Lapsed |