US2587427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph record
Assignee: ALVAREZ PATENT Corp
•
Filing: 1946-09-18
•
Granted: 1952-02-26
•
Expires: 1966-09-18
Abstract
No abstract record available.
Inventors
- 👤 Alvarez Octavio Jose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:31
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/68; G11B3/70; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1034; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24215; Y10T428/24231
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US819058A
Cited
US2029102A
Cited
US2008092A
Cited
US1946596A
Cited
US2106623A
Cited
US2272157A
Cited
US2294796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |