US3036289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound ranging systems
Assignee: Raytheon Co
•
Filing: 1959-02-27
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Granted: 1962-05-22
•
Expires: 1979-02-27
Abstract
No abstract record available.
Inventors
- 👤 John N Beebe
- 👤 Robert A Fryklund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:05
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/52; G01S7/52004; G01S7/523; G01S7/526; G01S7/529; Y; Y10; Y10S; Y10S367/00; Y10S367/90
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) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |