US3384818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for detecting and measuring doppler frequency variation in a single pulse of alternating current
Assignee: Bendix Corp
•
Filing: 1967-01-30
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Granted: 1968-05-21
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Expires: 1987-01-30
Abstract
No abstract record available.
Inventors
- 👤 Ernest P Longerich
- 👤 Donald J O'brien
- 👤 Erland W Rudy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:48
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/26; G; G01; G01S; G01S1/00; G01S1/72; G01S13/00; G01S13/02; G01S13/50; G01S13/58; G01S13/585; H03D3/02; H03D3/06; H03D3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2513731A
Cited
US2580148A
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US2896162A
Cited
US2970258A
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US2963648A
Cited
US3180936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |