US123072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in malleable-iron castings
Assignee: —
•
Filing: —
•
Granted: 1872-01-30
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Expires: 1889-01-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:34
CPC Classifications
C; C21; C21D; C21D5/00; C21D5/04; C21D5/06; C21D5/08; C21D5/10
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) | 1875-01-29 | 1875-07-31 | 1876-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1879-01-29 | 1879-07-31 | 1880-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1883-01-29 | 1883-07-31 | 1884-01-30 | $7700.00 | Window Closed / Lapsed |