US3528665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cutting a groove in the surface of an original recording disc
Assignee: TELDEC Telefunken Decca Schallplatten GmbH
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Filing: 1967-12-19
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Granted: 1970-09-15
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Expires: 1987-12-19
Abstract
No abstract record available.
Inventors
- 👤 Horst Redlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:48
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/68; G11B3/72; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49995; Y10T29/49996
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) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |