US2626528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive for sound recording and reproducing machines
Assignee: Rheinmetall Air Defence AG
•
Filing: 1950-03-13
•
Granted: 1953-01-27
•
Expires: 1970-03-13
Abstract
No abstract record available.
Inventors
- 👤 Keller Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:39
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US328556A
Cited
US446927A
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US752778A
Cited
US1415128A
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US1870421A
Cited
US2200574A
Cited
US2221661A
Cited
US2244120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |