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Patent US2317256A successfully refreshed from Google Patents.
US2317256A
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Bomb dropping device adapted to be dropped from aircraft
Assignee: Individual
•
Filing: 1940-11-20
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Granted: 1943-04-20
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Expires: 1960-11-20
Abstract
No abstract record available.
Inventors
- 👤 Kurowski Juljan Bronislaw De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:24
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/56; F42B12/58; F42B10/00; F42B10/32; F42B10/48; F42B10/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-04-19 | 1946-10-19 | 1947-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-04-19 | 1950-10-19 | 1951-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-04-19 | 1954-10-19 | 1955-04-20 | $7700.00 | Window Closed / Lapsed |