US2455712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording disk for sound and pictures
Assignee: Individual
•
Filing: 1947-02-25
•
Granted: 1948-12-07
•
Expires: 1967-02-25
Abstract
No abstract record available.
Inventors
- 👤 Soden Adolph F Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:27
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/84; H04N5/85
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR459537A
Cited
US1609949A
Cited
US1641727A
Cited
US1933057A
Cited
US2005914A
Cited
US2203437A
Cited
US2346472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |