US2654856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ionic tube for controlling electric currents
Assignee: PRODUCTS AND LICENSING Corp
•
Filing: 1950-11-21
•
Granted: 1953-10-06
•
Expires: 1970-11-21
Abstract
No abstract record available.
Inventors
- 👤 Pierre M G Toulon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:44
CPC Classifications
H; H01; H01J; H01J13/00; H01J13/02; H01J13/34; H01J13/48; H01J2893/00; H01J2893/0072; H01J2893/0073; H01J2893/0074; H01J2893/0087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2128862A
Cited
US2182633A
Cited
US2354031A
Cited
US2424104A
Cited
US2428543A
Cited
US2466843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |