US1629968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallurgical-furnace-feeding mechanism
Assignee: American Smelting and Refining Co
•
Filing: 1923-09-24
•
Granted: 1927-05-24
•
Expires: 1943-09-24
Abstract
No abstract record available.
Inventors
- 👤 Richards Adelbert Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:52
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/14; F27B9/16; F27B9/18; F27B9/185; F27D; F27D3/00; F27D3/10; F27D2003/0034; F27D2003/0063; F27D2003/105; F27D3/12; F27D2003/125; F27D99/00; F27D99/0073; F27D2099/0078; F27D2099/008
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1930-05-23 | 1930-11-22 | 1931-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-05-23 | 1934-11-22 | 1935-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-05-23 | 1938-11-22 | 1939-05-24 | $7700.00 | Window Closed / Lapsed |