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US2490302A
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Assignee: Curtiss Wright Corp
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Filing: 1944-04-07
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Granted: 1949-12-06
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Expires: 1964-04-07
Abstract
No abstract record available.
Inventors
- 👤 August A Holfelder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:12
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/14; B25B27/18; B23; B23H; B23H9/00; B23H9/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1242171A
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US1318147A
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US2001688A
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US2079310A
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US2385665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |