US838466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-controlling valve.
Assignee: CHARLES E SEMPLE SR
•
Filing: 1906-05-18
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Granted: 1906-12-11
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Expires: 1926-05-18
Abstract
No abstract record available.
Inventors
- 👤 Charles E Semple Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:30
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/363
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) | 1909-12-10 | 1910-06-11 | 1910-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-12-10 | 1914-06-11 | 1914-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-12-10 | 1918-06-11 | 1918-12-11 | $7700.00 | Window Closed / Lapsed |