US2681391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interstage coupling network having improved phase response
Assignee: Lanteris Space LLC
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Filing: 1950-08-11
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Granted: 1954-06-15
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Expires: 1970-08-11
Abstract
No abstract record available.
Inventors
- 👤 William E Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:12
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/0138; H03H7/0146; H03F; H03F1/00; H03F1/42; H03F1/48; H03F1/50; H03H7/06; H03H7/07; H03H7/17; H03H7/1741; H03H7/1775; H03H7/1783
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1434555A
Cited
US1964990A
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US1955788A
Cited
US2054794A
Cited
US2356308A
Cited
US2321291A
Cited
US2574259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-14 | 1957-12-14 | 1958-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-14 | 1961-12-14 | 1962-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-14 | 1965-12-14 | 1966-06-15 | $7700.00 | Window Closed / Lapsed |