US2873758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve fitting for pump pressure systems
Assignee: Individual
•
Filing: 1957-01-04
•
Granted: 1959-02-17
•
Expires: 1977-01-04
Abstract
No abstract record available.
Inventors
- 👤 Nielsen Adolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:37
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04D; F04D13/00; F04D13/16; G; G05; G05D; G05D16/00; G05D16/04; G05D16/10; G05D16/103; G05D16/106; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/313; Y10T137/3133; Y10T137/3137; Y10T137/7722; Y10T137/7771; Y10T137/7772; Y10T137/7777; Y10T137/8593; Y10T137/87265; Y10T137/87338; Y10T137/87346; Y10T137/87571; Y10T137/87587; Y10T137/87643
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) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |