US215496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in fluid-pressure regulators
Assignee: —
•
Filing: —
•
Granted: 1879-05-20
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Expires: 1896-05-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:45
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0675; G05D16/0683; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7809; Y10T137/782
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) | 1882-05-19 | 1882-11-18 | 1883-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1886-05-19 | 1886-11-18 | 1887-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1890-05-19 | 1890-11-18 | 1891-05-20 | $7700.00 | Window Closed / Lapsed |