Patent US2977919A successfully refreshed from Google Patents.
US2977919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound impedance joint for torpedo
Assignee: Individual
•
Filing: 1954-05-28
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Granted: 1961-04-04
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Expires: 1974-05-28
Abstract
No abstract record available.
Inventors
- 👤 Theodore V Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:27
CPC Classifications
F; F42; F42B; F42B19/00; F42B19/005
Claims Analysis
Total Claims: 0
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US2692782A
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US2744484A
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US2811216A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |