Patent US2998240A successfully refreshed from Google Patents.
US2998240A
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Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1956-12-28
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Granted: 1961-08-29
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Expires: 1976-12-28
Abstract
No abstract record available.
Inventors
- 👤 John P Heiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:45
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/02; B60G17/04; B60G17/048; B60G15/00; B60G15/08; B60G15/12; F; F16; F16F; F16F9/00; F16F9/06; F16F9/08; F16F9/092
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1464680A
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US1861821A
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US2254491A
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US2021043A
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US2047287A
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US2104499A
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US2165332A
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US2169335A
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US2620182A
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FR1076192A
Cited
US2756046A
Cited
US2755099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |