Patent US790584A successfully refreshed from Google Patents.
US790584A
Expired / Lapsed
US
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Device for equalizing the pressure of fluids.
Assignee: Individual
•
Filing: 1905-01-03
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Granted: 1905-05-23
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Expires: 1925-01-03
Abstract
No abstract record available.
Inventors
- 👤 Samuel Manning
- 👤 William B Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:20
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1306; G05D23/1313; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7825; Y10T137/7832; Y10T137/7835; Y10T137/7836
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) | 1908-05-22 | 1908-11-21 | 1909-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-05-22 | 1912-11-21 | 1913-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-05-22 | 1916-11-21 | 1917-05-23 | $7700.00 | Window Closed / Lapsed |