US2694413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protected seal for fluid valves
Assignee: Homestead Valve Manufacturing Co
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Filing: 1951-05-24
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Granted: 1954-11-16
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Expires: 1971-05-24
Abstract
No abstract record available.
Inventors
- 👤 John W Force
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:07
CPC Classifications
F; F16; F16K; F16K43/00; B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/24; B23Q35/26; B23Q35/36; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/07; F16K11/0712; F16L; F16L55/00; F16L55/10; G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/50; G03B21/52; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86558; Y10T137/86718; Y10T137/86759; Y10T137/86791; Y10T137/86799; Y10T137/86879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |