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US2555857A
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US
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Antenna system
Assignee: AIRBORNE INSTR LAB Inc
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Filing: 1948-11-24
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Granted: 1951-06-05
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Expires: 1968-11-24
Abstract
No abstract record available.
Inventors
- 👤 Nelson Jessie Ann
- 👤 Dorne Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:11
CPC Classifications
B; B64; B64C; B64C1/00; B64C1/36; H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/282
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) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |