US2840787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid tau type waveguide junction
Assignee: Raytheon Co
•
Filing: 1952-09-11
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Granted: 1958-06-24
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Expires: 1972-09-11
Abstract
No abstract record available.
Inventors
- 👤 Adcock Mack Donald
- 👤 Louis A Kurtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:18
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12; H01P5/16; H01P5/19; H01P5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2563612A
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US2445895A
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US2438915A
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US2704351A
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US2643295A
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US2531447A
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US2682641A
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US2656513A
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US2739287A
Cited
US2764740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |