US675327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve-shifting device.
Assignee: FRANK B FELT
•
Filing: 1900-10-15
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Granted: 1901-05-28
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Expires: 1920-10-15
Abstract
No abstract record available.
Inventors
- 👤 Charles E Felt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:04
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/528; F16K31/5284
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) | 1904-05-27 | 1904-11-26 | 1905-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-05-27 | 1908-11-26 | 1909-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-05-27 | 1912-11-26 | 1913-05-28 | $7700.00 | Window Closed / Lapsed |