US2161087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillator of the magnetron type
Assignee: Koninklijke Philips NV
•
Filing: 1935-12-17
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Granted: 1939-06-06
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Expires: 1955-12-17
Abstract
No abstract record available.
Inventors
- 👤 Posthumus Klaas
- 👤 Lindern Carl G A Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:45
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/28; H03C1/30; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/64; H03K; H03K7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-06-05 | 1942-12-05 | 1943-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-06-05 | 1946-12-05 | 1947-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-06-05 | 1950-12-05 | 1951-06-06 | $7700.00 | Window Closed / Lapsed |