US616101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blast-furnace accessory
Assignee: —
•
Filing: —
•
Granted: 1898-12-20
•
Expires: 1915-12-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:47
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606; C21B; C21B7/00; C21B7/16
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) | 1901-12-20 | 1902-06-21 | 1902-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1905-12-20 | 1906-06-21 | 1906-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1909-12-20 | 1910-06-21 | 1910-12-21 | $7700.00 | Window Closed / Lapsed |