US857983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for bending cast-iron.
Assignee: National Engineering Co
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Filing: 1905-07-25
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Granted: 1907-06-25
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Expires: 1925-07-25
Abstract
No abstract record available.
Inventors
- 👤 Burton S Cowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:59
CPC Classifications
B; B21; B21D; B21D5/00; B21D5/06; B21D5/08
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) | 1910-06-24 | 1910-12-24 | 1911-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-06-24 | 1914-12-24 | 1915-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-06-24 | 1918-12-24 | 1919-06-25 | $7700.00 | Window Closed / Lapsed |