US2826709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for glow discharge tubes
Assignee: Individual
•
Filing: 1956-01-24
•
Granted: 1958-03-11
•
Expires: 1976-01-24
Abstract
No abstract record available.
Inventors
- 👤 Ardenne Manfred Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:04
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/02; H01J41/06; H01J27/00; H01J27/02; H01J27/08; H01J27/10; H01J41/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1498536A
Cited
GB335537A
Cited
US2217187A
Cited
US2352657A
Cited
US2440851A
Cited
US2502236A
Cited
US2712097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |