US2789470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projectile feed device
Assignee: Douglas Aircraft Co Inc
•
Filing: 1952-08-05
•
Granted: 1957-04-23
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Expires: 1972-08-05
Abstract
No abstract record available.
Inventors
- 👤 George A Bronson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:22
CPC Classifications
F; F41; F41A; F41A9/00; F41A9/50; F41A9/38; F41A9/46; F41A9/61; F41A9/64; F41A9/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2451522A
Cited
US2440634A
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US2440723A
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US2599555A
Cited
US2464920A
Cited
US2485715A
Cited
US2598001A
Cited
US2546823A
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 |