US2659273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Harpoon
Assignee: JOHN O BLACKMON
•
Filing: 1948-08-16
•
Granted: 1953-11-17
•
Expires: 1968-08-16
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Trautmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:32
CPC Classifications
F; F42; F42B; F42B30/00; F42B30/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US30869A
Cited
US49548A
Cited
GB191423130A
Cited
GB191516210A
Cited
US1365869A
Cited
US1414084A
Cited
US2427989A
Cited
US2530434A
Cited
US3375522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |