Patent US720769A successfully refreshed from Google Patents.
Patent US1006799A successfully refreshed from Google Patents.
US1006799A
Expired / Lapsed
US
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Reinforced-concrete lining for mine-shafts and method of the manufacture thereof.
Assignee: Individual
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Filing: —
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Granted: 1911-10-24
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Expires: 1928-10-24
Abstract
No abstract record available.
Inventors
- 👤 Carl Scholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:16
CPC Classifications
E; E21; E21D; E21D11/00; E21D11/04; E21D11/10; E21D11/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1914-10-23 | 1915-04-24 | 1915-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-10-23 | 1919-04-24 | 1919-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-10-23 | 1923-04-24 | 1923-10-24 | $7700.00 | Window Closed / Lapsed |