US2612617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous pulse amplifier
Assignee: Northrop Grumman Corp
•
Filing: 1949-05-12
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Granted: 1952-09-30
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Expires: 1969-05-12
Abstract
No abstract record available.
Inventors
- 👤 Glenn E Hagen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:06
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/50; H01J17/52; H03; H03K; H03K17/00; H03K17/51; H03K17/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1393369A
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US2020914A
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US1824452A
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US1984877A
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US2468174A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |