US2853098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self compensating flow regulator
Assignee: Individual
•
Filing: 1956-02-20
•
Granted: 1958-09-23
•
Expires: 1976-02-20
Abstract
No abstract record available.
Inventors
- 👤 Roland W Fritzsche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:18
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0126; G05D7/0133; F; F16; F16K; F16K15/00; F16K15/02; F16K15/04; F16K15/044; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7869; Y10T137/7878; Y10T137/7904; Y10T137/7905
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735669A
Cited
US2450535A
Cited
US2402729A
Cited
US2495338A
Cited
US2591090A
Cited
GB735640A
Cited
US2796889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |