US2924652A
Expired / Lapsed
US
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Assignee: EMI Ltd
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Filing: 1955-04-19
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Granted: 1960-02-09
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Expires: 1975-04-19
Abstract
No abstract record available.
Inventors
- 👤 Kramskoy Charles Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:49
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/30; F41G7/301; F41G7/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-08 | 1963-08-10 | 1964-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-08 | 1967-08-10 | 1968-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-08 | 1971-08-10 | 1972-02-09 | $7700.00 | Window Closed / Lapsed |