US3230481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for segregating harmonic power in a waveguide system
Assignee: Individual
•
Filing: 1962-11-06
•
Granted: 1966-01-18
•
Expires: 1982-11-06
Abstract
No abstract record available.
Inventors
- 👤 David J Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:29
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/12; H01P3/13; H01P1/00; H01P1/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2197122A
Cited
US2684469A
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US2748350A
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US2785381A
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US2869085A
Cited
US2961619A
Cited
US3078423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |