US2944232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device comprising a cavity resonator
Assignee: US Philips Corp
•
Filing: 1954-04-19
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Granted: 1960-07-05
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Expires: 1974-04-19
Abstract
No abstract record available.
Inventors
- 👤 Beljers Hugo Gerrit
- 👤 Knol Kornelis Swier
- 👤 Pannenborg Anton Eduard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:54
CPC Classifications
H; H03; H03C; H03C7/00; H03C7/02; H03C7/022; H01; H01P; H01P1/00; H01P1/20; H01P1/215; H01P1/217; H01P7/00; H01P7/06
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) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |