US2568869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound record drive
Assignee: Individual
•
Filing: 1945-11-14
•
Granted: 1951-09-25
•
Expires: 1965-11-14
Abstract
No abstract record available.
Inventors
- 👤 William K Rieber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:05
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B19/26; G11B19/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1508827A
Cited
US2029730A
Cited
US2318627A
Cited
US2261889A
Cited
US2318628A
Cited
US2296871A
Cited
US2340806A
Cited
US2345148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |