US3495176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ionosphere sounder system
Assignee: Granger Associates Inc
•
Filing: 1965-01-25
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Granted: 1970-02-10
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Expires: 1985-01-25
Abstract
No abstract record available.
Inventors
- 👤 Raymond D Egan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:49
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/02; H04B7/12; G; G01; G01S; G01S13/00; G01S13/02; G01S13/0218; H04L; H04L27/00; H04L27/10; H04L27/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |