US2484613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency induction heating apparatus
Assignee: AT&T Inc
•
Filing: 1945-07-07
•
Granted: 1949-10-11
•
Expires: 1965-07-07
Abstract
No abstract record available.
Inventors
- 👤 Rocco J Detuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:30
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/36; H05B6/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2003855A
Cited
US2144377A
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US2271916A
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US2299934A
Cited
US2335495A
Cited
US2397990A
Cited
US2348361A
Cited
US2394944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-10 | 1953-04-11 | 1953-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-10 | 1957-04-11 | 1957-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-10 | 1961-04-11 | 1961-10-11 | $7700.00 | Window Closed / Lapsed |