Patent US2464727A successfully refreshed from Google Patents.
US2464727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency inductor heattreating apparatus
Assignee: Sunbeam Corp
•
Filing: 1944-06-07
•
Granted: 1949-03-15
•
Expires: 1964-06-07
Abstract
No abstract record available.
Inventors
- 👤 Herbert F Storm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:30
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/10; H05B6/101
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1412484A
Cited
US1378187A
Cited
US1779604A
Cited
GB260026A
Cited
US1687656A
Cited
US1747934A
Cited
US1987458A
Cited
GB472198A
Cited
US2338496A
Cited
US2181899A
Cited
US2359087A
Cited
US2364623A
Cited
US2353130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |