US2529560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus for radiofrequency heating
Assignee: Singer Co
•
Filing: 1947-11-28
•
Granted: 1950-11-14
•
Expires: 1967-11-28
Abstract
No abstract record available.
Inventors
- 👤 Bohumir A Larys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:16
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/46; H05B6/48; H05B6/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2131366A
Cited
US2205424A
Cited
US2245353A
Cited
US2251277A
Cited
US2282377A
Cited
US2331360A
Cited
US2416172A
Cited
US2424905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |