Patent US2564579A successfully refreshed from Google Patents.
US2564579A
Expired / Lapsed
US
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High-frequency dielectric heating
Assignee: Girdler Corp
•
Filing: 1946-03-08
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Granted: 1951-08-14
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Expires: 1966-03-08
Abstract
No abstract record available.
Inventors
- 👤 Robert B Parmenter
- 👤 Edgar L Marven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:42
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/02
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |