US2794931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retarding field oscillators
Assignee: Raytheon Co
•
Filing: 1952-04-08
•
Granted: 1957-06-04
•
Expires: 1972-04-08
Abstract
No abstract record available.
Inventors
- 👤 Bernard C Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:13
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/68; 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)
US2593443A
Cited
US2411913A
Cited
US2513359A
Cited
US2513277A
Cited
US2523031A
Cited
US2631258A
Cited
US2651738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |