US2881004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Playable record album
Assignee: Individual
•
Filing: 1955-12-22
•
Granted: 1959-04-07
•
Expires: 1975-12-22
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:01
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/04; G11B17/05; G11B33/00; G11B33/02; G11B33/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US903918A
Cited
US1057671A
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US1137126A
Cited
US1926606A
Cited
US1952054A
Cited
US2344919A
Cited
US2601426A
Cited
US2777699A
Cited
US2678861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |