Patent US991230A successfully refreshed from Google Patents.
US991230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overbalanced fluid-pressure valve.
Assignee: C P POWER Co
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Filing: 1910-07-08
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Granted: 1911-05-02
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Expires: 1930-07-08
Abstract
No abstract record available.
Inventors
- 👤 Edward P Noyes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:33
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; F16K31/402; F16K31/404
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) | 1914-05-01 | 1914-10-31 | 1915-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-05-01 | 1918-10-31 | 1919-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-05-01 | 1922-10-31 | 1923-05-02 | $7700.00 | Window Closed / Lapsed |