US3452356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Directional radio relay system
Assignee: Boeing North American Inc
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Filing: 1966-06-07
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Granted: 1969-06-24
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Expires: 1986-06-07
Abstract
No abstract record available.
Inventors
- 👤 William E Stoney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:21
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/14; H04B7/15; H04B7/204; H04B7/2043; H01; H01Q; H01Q3/00; H01Q3/22; H04B7/02; H04B7/10; H04B7/155; H04B7/15528; H04B7/1555; H04B7/24; H04B7/26; H04B7/2603; H04B7/2606
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) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |