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US844225A
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Exploding shell.
Assignee: Fried Krupp AG
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Filing: 1901-01-24
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Granted: 1907-02-12
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Expires: 1921-01-24
Abstract
No abstract record available.
Inventors
- 👤 Alfred Wratzke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:29
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/20; F42B12/201; F42B12/204
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) | 1910-02-11 | 1910-08-13 | 1911-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-02-11 | 1914-08-13 | 1915-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-02-11 | 1918-08-13 | 1919-02-12 | $7700.00 | Window Closed / Lapsed |