US2987029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonar tow bar extension
Assignee: Individual
•
Filing: 1958-09-05
•
Granted: 1961-06-06
•
Expires: 1978-09-05
Abstract
No abstract record available.
Inventors
- 👤 James B Manuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:59
CPC Classifications
B; B64; B64D; B64D5/00; F; F16; F16G; F16G11/00; F16G11/04; F16G11/044; F16G11/048; F16G11/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1319565A
Cited
US1758218A
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US2388013A
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US2377442A
Cited
US2435956A
Cited
US2673233A
Cited
US2551596A
Cited
GB666004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |