US2600823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot top electrode tip
Assignee: Allegheny Ludlum Steel Corp
•
Filing: 1949-01-15
•
Granted: 1952-06-17
•
Expires: 1969-01-15
Abstract
No abstract record available.
Inventors
- 👤 Concezio L Zaccagnini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:19
CPC Classifications
B; B22; B22D; B22D27/00; B22D27/04; B22D27/06; H; H05; H05B; H05B3/00; H05B3/02; H05B3/03
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2230296A
Cited
US2248628A
Cited
US2240405A
Cited
US2354871A
Cited
US2441416A
Cited
US2471531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |