Patent US1996308A successfully refreshed from Google Patents.
Patent US2547503A successfully refreshed from Google Patents.
US2547503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiresonator magnetron
Assignee: RCA Corp
•
Filing: 1943-11-19
•
Granted: 1951-04-03
•
Expires: 1963-11-19
Abstract
No abstract record available.
Inventors
- 👤 Philip T Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:40
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/58; H01J25/587; H01J25/593
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2034036A
Cited
US2034034A
Cited
US2115521A
Cited
US2190511A
Cited
US2287845A
Cited
US2266428A
Cited
US2458802A
Cited
US2404212A
Cited
US2446825A
Cited
US2419172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |