US2789465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-propelled harpoon gun
Assignee: Individual
•
Filing: 1954-01-14
•
Granted: 1957-04-23
•
Expires: 1974-01-14
Abstract
No abstract record available.
Inventors
- 👤 James H Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:31
CPC Classifications
F; F41; F41C; F41C9/00; F41C9/06; F42; F42B; F42B30/00; F42B30/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE308475C
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DE301356C
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US331792A
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US348848A
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US669091A
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FR21277E
Cited
US1721704A
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US1825203A
Cited
GB421578A
Cited
US2069276A
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US2388749A
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US2423533A
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US2708860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |