US2907874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave communication system
Assignee: Westinghouse Electric Corp
•
Filing: 1955-02-25
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Granted: 1959-10-06
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Expires: 1975-02-25
Abstract
No abstract record available.
Inventors
- 👤 Robert L Halvorson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:25
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/74; H04B1/745; H04B7/00; H04B7/14; H04B7/15; H04B7/155; H04B7/15528; H04B7/15542; H04B7/24; H04B7/26; H04B7/2603; H04B7/2606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1876694A
Cited
GB352098A
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US2129332A
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US2530748A
Cited
US2514367A
Cited
US2691065A
Cited
US2726325A
Cited
US2706286A
Cited
US2699496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |