Patent US2931035A successfully refreshed from Google Patents.
US2931035A
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US
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Radar directional antenna system
Assignee: Siemens Schweiz AG
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Filing: 1956-09-10
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Granted: 1960-03-29
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Expires: 1976-09-10
Abstract
No abstract record available.
Inventors
- 👤 Reinhard Louis
- 👤 Klauser Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:24
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/02; H01Q3/04; H01Q3/06; B; B06; B06B; B06B3/00; F; F15; F15B; F15B21/00; F16; F16H; F16H37/00; F16H37/12; F16H37/122; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB733593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |