US2607872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for radio frequency heating of rubber
Assignee: Wingfoot Corp
•
Filing: 1948-11-13
•
Granted: 1952-08-19
•
Expires: 1968-11-13
Abstract
No abstract record available.
Inventors
- 👤 Robert S Enabnit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:55
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)
US1981631A
Cited
US2136682A
Cited
US2156119A
Cited
US2386966A
Cited
US2421098A
Cited
US2442451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |