US2869109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth sounding devices
Assignee: Raytheon Co
•
Filing: 1953-04-24
•
Granted: 1959-01-13
•
Expires: 1973-04-24
Abstract
No abstract record available.
Inventors
- 👤 Robert A Fryklund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:35
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1452122A
Cited
US2278919A
Cited
US2496980A
Cited
US2610244A
Cited
US2649546A
Cited
US2528015A
Cited
US2572546A
Cited
US2491020A
Cited
US2597199A
Cited
US2557196A
Cited
US2633405A
Cited
US2614903A
Cited
US2697172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |