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US2984833A
Expired / Lapsed
US
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Super-regenerative radio ranging device
Assignee: Individual
•
Filing: 1948-12-16
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Granted: 1961-05-16
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Expires: 1968-12-16
Abstract
No abstract record available.
Inventors
- 👤 Robert T Nieset
- 👤 Horace R Crane
- 👤 Anne C Gratian
- 👤 Joseph W Gratian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:16
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/88; G01S13/93; G01S13/933
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2159493A
Cited
US2265868A
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US2452549A
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US2431344A
Cited
GB581982A
Cited
US2553018A
Cited
US2568265A
Cited
US2422382A
Cited
US2415093A
Cited
US2426205A
Cited
US2511409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |