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Patent US2456546A successfully refreshed from Google Patents.
US2456546A
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Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1944-01-01
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Granted: 1948-12-14
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Expires: 1964-01-01
Abstract
No abstract record available.
Inventors
- 👤 Venditty Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:12
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16C11/0604; F16C11/0666; F16C11/0676
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB121867A
Cited
US1902667A
Cited
US2083718A
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US2111200A
Cited
US2272650A
Cited
US2157401A
Cited
US2206972A
Cited
GB540372A
Cited
US2301346A
Cited
US2364176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |