US2876383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetron tuner
Assignee: Northrop Grumman Systems Corp
•
Filing: 1955-09-09
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Granted: 1959-03-03
•
Expires: 1975-09-09
Abstract
No abstract record available.
Inventors
- 👤 Paul W Crapuchettes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:52
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/08; H01J; H01J23/00; H01J23/16; H01J23/18; H01J23/20; H01J23/213; H01J23/36; H03; H03H; H03H2/00; H03H2/005; H03H2/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2424496A
Cited
US2481171A
Cited
US2495744A
Cited
US2508576A
Cited
US2529950A
Cited
US2629068A
Cited
US2800609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |