US2831189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide band homing system
Assignee: Individual
•
Filing: 1945-06-23
•
Granted: 1958-04-15
•
Expires: 1965-06-23
Abstract
No abstract record available.
Inventors
- 👤 Robert J Kemper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:37
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1683739A
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US1961598A
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US1962202A
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US2054160A
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US2151922A
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US2160857A
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US2271550A
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US2198445A
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US2251708A
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US2187097A
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US2275296A
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US2216708A
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US2368298A
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US2413018A
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US2411034A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |