Patent US2844727A successfully refreshed from Google Patents.
Patent US2827923A successfully refreshed from Google Patents.
US2827923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically operated valves
Assignee: N G N ELECTRICAL Ltd
•
Filing: 1954-08-30
•
Granted: 1958-03-25
•
Expires: 1974-08-30
Abstract
No abstract record available.
Inventors
- 👤 Sadler Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:38
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0603; F16K31/0624; F16K31/0606; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86292; Y10T137/8634; Y10T137/86919
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2735047A
Cited
US193087A
Cited
US962516A
Cited
US1523112A
Cited
US2114961A
Cited
US2155358A
Cited
US2292184A
Cited
US2360945A
Cited
GB566211A
Cited
US2522249A
Cited
US2596409A
Cited
US2609989A
Cited
FR978073A
Cited
US2651744A
Cited
US2698159A
Cited
US2624585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |