US2459152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic valve
Assignee: Individual
•
Filing: 1943-06-19
•
Granted: 1949-01-18
•
Expires: 1963-06-19
Abstract
No abstract record available.
Inventors
- 👤 Delbert A Deisinger
- 👤 Robert A Kirkman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:20
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2128234A
Cited
US1035958A
Cited
US2125280A
Cited
US2415962A
Cited
US2427089A
Cited
US2403302A
Cited
US2403303A
Cited
US2423426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |