Patent US2480682A successfully refreshed from Google Patents.
US2480682A
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Microwave heating apparatus using circularly polarized horn
Assignee: Raytheon Co
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Filing: 1946-09-21
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Granted: 1949-08-30
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Expires: 1966-09-21
Abstract
No abstract record available.
Inventors
- 👤 Karl J Stiefel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:53
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/70; H05B6/701; H01; H01P; H01P1/00; H01P1/165; H01P1/17; H05B6/704
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |