US723094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace-charging apparatus.
Assignee: WELLMAN-SEAVER ENGINEERING Co
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Filing: 1902-04-08
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Granted: 1903-03-17
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Expires: 1922-04-08
Abstract
No abstract record available.
Inventors
- 👤 Charles H Wellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:03
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/38; C21C5/40; F; F27; F27D; F27D3/00; F27D3/14
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) | 1906-03-16 | 1906-09-15 | 1907-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-03-16 | 1910-09-15 | 1911-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-03-16 | 1914-09-15 | 1915-03-17 | $7700.00 | Window Closed / Lapsed |