Patent US2525619A successfully refreshed from Google Patents.
US2525619A
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Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1947-02-13
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Granted: 1950-10-10
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Expires: 1967-02-13
Abstract
No abstract record available.
Inventors
- 👤 Jay M Roth
- 👤 Leslie L Aspelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:18
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3441
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1002023A
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US1245691A
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FR543037A
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GB215659A
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US1730145A
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US1816508A
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US1898914A
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GB417348A
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US2037894A
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GB433488A
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US2260809A
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US2312891A
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US2210152A
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US2335284A
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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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |