US2947511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valves
Assignee: Power Gas Corp Ltd
•
Filing: 1957-02-08
•
Granted: 1960-08-02
•
Expires: 1977-02-08
Abstract
No abstract record available.
Inventors
- 👤 Mcinnes William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:10
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/04; F16K27/044; F16K27/048; F16K31/00; F16K31/12; F16K31/122
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US88599A
Cited
US104037A
Cited
US127951A
Cited
DE599767C
Cited
GB153044A
Cited
US2596817A
Cited
US2664098A
Cited
US2868495A
Cited
FR1114667A
Cited
US2834571A
Cited
US2832564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |