US1940622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric induction furnace method
Assignee: Ajax Electrothermic Corp
•
Filing: 1932-02-10
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Granted: 1933-12-19
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Expires: 1952-02-10
Abstract
No abstract record available.
Inventors
- 👤 Guilliam H Clamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:28
CPC Classifications
C; C22; C22B; C22B4/00; B; B01; B01F; B01F33/00; B01F33/45; B01F33/451; H; H05; H05B; H05B6/00; H05B6/02; H05B6/34; B01F2101/00; B01F2101/45; Y; Y02; Y02P; Y02P10/00; Y02P10/25
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) | 1936-12-18 | 1937-06-19 | 1937-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-12-18 | 1941-06-19 | 1941-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-12-18 | 1945-06-19 | 1945-12-19 | $7700.00 | Window Closed / Lapsed |