US3702144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orifice structure having two different flow rates
Assignee: Atlas Pacific Engineering Co
•
Filing: 1970-10-06
•
Granted: 1972-11-07
•
Expires: 1990-10-06
Abstract
Abstract THIS INVENTION RELATES TO A NOVEL FORM OF OF ORFICE STRUCTURE PROVIDING A HIGH RATE OF FLOW IN ONE DIRECTION AND A REDUCED RATE OF FLOW IN THE OPPOSITE DIRECTION UNDER THE SAME CONDITIONS.
Inventors
- 👤 Malcolm W Loveland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:20
CPC Classifications
A; A23; A23N; A23N7/00; F; F16; F16K; F16K47/00; F16K47/08; F16K47/10; F16L; F16L55/00; F16L55/02; F16L55/027
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |