US2882328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controller for regulating the resistance of a melt
Assignee: Individual
•
Filing: 1957-11-12
•
Granted: 1959-04-14
•
Expires: 1977-11-12
Abstract
No abstract record available.
Inventors
- 👤 Edgar C Worden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:37
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/2451; G05D23/2456
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1320071A
Cited
US2158135A
Cited
US2249993A
Cited
US2711435A
Cited
US2827607A
Cited
US2740936A
Cited
US2825864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |