US3439318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Echo sounding method and apparatus
Assignee: Saab Bofors AB
•
Filing: 1967-09-15
•
Granted: 1969-04-15
•
Expires: 1987-09-15
Abstract
No abstract record available.
Inventors
- 👤 Hans Bostroem
- 👤 Friedrich Howey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:36
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/22; G01S13/225; G01S13/227; G01S15/00; G01S15/02; G01S15/06; G01S15/08; G01S15/10; G01S15/14; Y; Y10; Y10S; Y10S367/00; Y10S367/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3277473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |