US2567220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scalloped limacon pattern antenna
Assignee: Unisys Corp
•
Filing: 1947-10-29
•
Granted: 1951-09-11
•
Expires: 1967-10-29
Abstract
No abstract record available.
Inventors
- 👤 George B Litchford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:25
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/44; G01S1/46; G01S1/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2044413A
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US2133615A
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US2416698A
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US2387569A
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US2412320A
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US2359620A
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US2465416A
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US2461187A
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US2413085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |