US2871393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traveling wave tube of high amplification
Assignee: International Standard Electric Corp
•
Filing: 1955-08-24
•
Granted: 1959-01-27
•
Expires: 1975-08-24
Abstract
No abstract record available.
Inventors
- 👤 Klein Werner
- 👤 Friz Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:41
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/06; H01J23/065; H01J23/16; H01J23/24; H01J23/30; H01J3/00; H01J3/02; H01J3/029
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2636948A
Cited
US2575383A
Cited
US2602148A
Cited
US2626371A
Cited
US2669674A
Cited
US2707759A
Cited
US2730649A
Cited
US2771565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |