US2649133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for producing high-pressure tubes of hardening materials as cement
Assignee: HIMANIT AG
•
Filing: 1948-02-28
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Granted: 1953-08-18
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Expires: 1968-02-28
Abstract
No abstract record available.
Inventors
- 👤 Just Konrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:59
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/42; B28B21/50; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/103; Y10T156/1031
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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CH228172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |