US3431485A
Expired / Lapsed
US
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Microwave harmonic generator including a waveguide having oppositely extending channels defining a resonant region therein
Assignee: Boeing North American Inc
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Filing: 1967-03-10
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Granted: 1969-03-04
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Expires: 1987-03-10
Abstract
No abstract record available.
Inventors
- 👤 James N Lind
- 👤 Jerry C Aukland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:39
CPC Classifications
H; H03; H03B; H03B19/00; H03B19/16; H03B19/18; H03F; H03F7/00; H03F7/04
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) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |