US2479568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doppler radar system
Assignee: Unisys Corp
•
Filing: 1943-08-19
•
Granted: 1949-08-23
•
Expires: 1963-08-19
Abstract
No abstract record available.
Inventors
- 👤 William W Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:42
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/52; G01S13/522; G01S13/524; G01S13/53; G01S13/06; G01S13/08; G01S13/32; G01S13/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1639667A
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US1750668A
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US2406316A
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US2248727A
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US2301929A
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US2402464A
Cited
US2424263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |