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US2544148A
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Assignee: TWENTIETH CENTURY INV S Ltd
•
Filing: 1946-12-12
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Granted: 1951-03-06
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Expires: 1966-12-12
Abstract
No abstract record available.
Inventors
- 👤 Flanagan John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:32
CPC Classifications
G; G09; G09D; G09D3/00; G09D3/04; G09D3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1370220A
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US1541102A
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US1670316A
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US641433A
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FR489164A
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FR566722A
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US1692199A
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US2343969A
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US2400268A
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US2470692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |