Patent US4831273A successfully refreshed from Google Patents.
US2444293A
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Assignee: Curtiss Wright Corp
•
Filing: 1943-06-18
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Granted: 1948-06-29
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Expires: 1963-06-18
Abstract
No abstract record available.
Inventors
- 👤 Oscar E Holt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:10
CPC Classifications
B; B64; B64C; B64C21/00; B64C21/02; B64C21/08; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1444885A
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US1582689A
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DE672113C
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US2130958A
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GB491538A
Cited
US2170787A
Cited
US2276522A
Cited
GB521190A
Cited
US2334975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-29 | 1951-12-29 | 1952-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-29 | 1955-12-29 | 1956-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-29 | 1959-12-29 | 1960-06-29 | $7700.00 | Window Closed / Lapsed |