US2652259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track shifting and adjusting device for magnetic sound recorders and reproducers
Assignee: Rheinmetall Air Defence AG
•
Filing: 1950-05-10
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Granted: 1953-09-15
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Expires: 1970-05-10
Abstract
No abstract record available.
Inventors
- 👤 Keller Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:44
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US479431A
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US511402A
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US1792159A
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US2003434A
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US2043884A
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US2082353A
Cited
US2284043A
Cited
US2410569A
Cited
US2530029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |