US2749436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonobuoy
Assignee: Individual
•
Filing: 1951-01-23
•
Granted: 1956-06-05
•
Expires: 1971-01-23
Abstract
No abstract record available.
Inventors
- 👤 Robert H Rines
- 👤 Isaac S Blonder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:27
CPC Classifications
G; G01; G01H; G01H3/00; H; H03; H03C; H03C7/00; H03C7/02; H04; H04B; H04B11/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |