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US2561512A
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Assignee: BRITISH TUBE MILLS (AUSTRALIA) Ltd Pty
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Filing: 1946-10-29
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Granted: 1951-07-24
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Expires: 1966-10-29
Abstract
No abstract record available.
Inventors
- 👤 Holmes Leslie
- 👤 Edward O Burnard
- 👤 John B Higgs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:35
CPC Classifications
B; B21; B21C; B21C51/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191217011A
Cited
US1616028A
Cited
US1936208A
Cited
US2023574A
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US2283993A
Cited
US2315709A
Cited
US2437101A
Cited
US2432727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |