US3458170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure gradient valve
Assignee: Sulzer AG
•
Filing: 1967-01-24
•
Granted: 1969-07-29
•
Expires: 1987-01-24
Abstract
No abstract record available.
Inventors
- 👤 Ernst Vogeli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:40
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/141; F01D17/145; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/36; F22; F22B; F22B37/00; F22B37/02; F22B37/42; F22B37/44; F22B37/446
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |