Patent US2993609A successfully refreshed from Google Patents.
US2993609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal charging apparatus
Assignee: Cyprus Amax Minerals Co
•
Filing: 1958-11-07
•
Granted: 1961-07-25
•
Expires: 1978-11-07
Abstract
No abstract record available.
Inventors
- 👤 Stevenson M Enterline
- 👤 Sr James F Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:06
CPC Classifications
F; F27; F27B; F27B3/00; F27B3/10; F27B3/18; F27D; F27D3/00; F27D3/0025; F27D2003/0001; F27D2003/0012; F27D2003/0013; F27D2003/0034; F27D2003/0065; F27D2003/0085; F27D2003/0089; F27D2003/009; F27D2003/0093; F27M; F27M2001/00; F27M2001/15; F27M2001/1539; F27M2001/1547; F27M2001/1552
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1032306A
Cited
US2127007A
Cited
US2397129A
Cited
US2468326A
Cited
US2596386A
Cited
US2867341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |