US2602600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination of magnetic and disk playback apparatus
Assignee: Autophon AG
•
Filing: 1947-12-30
•
Granted: 1952-07-08
•
Expires: 1967-12-30
Abstract
No abstract record available.
Inventors
- 👤 Kappeler Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:54
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/10; Y; Y10; Y10S; Y10S242/00; Y10S242/914
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |