US2631258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical space discharge tube
Assignee: Raytheon Co
•
Filing: 1947-05-21
•
Granted: 1953-03-10
•
Expires: 1967-05-21
Abstract
No abstract record available.
Inventors
- 👤 Bernard C Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:24
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/02; H01J25/22; H01J25/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2454306A
Cited
US1755796A
Cited
US2250511A
Cited
US2284405A
Cited
US2398829A
Cited
US2414785A
Cited
US2414496A
Cited
US2429295A
Cited
US2412751A
Cited
US2408817A
Cited
US2513359A
Cited
US2513296A
Cited
US2494693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |