US2531067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph needle
Assignee: Individual
•
Filing: 1946-04-17
•
Granted: 1950-11-21
•
Expires: 1966-04-17
Abstract
No abstract record available.
Inventors
- 👤 Massa Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:31
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/44; G11B3/46; G11B3/48
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1270526A
Cited
US1397835A
Cited
US1768704A
Cited
GB393571A
Cited
GB372428A
Cited
US2227574A
Cited
US2261616A
Cited
US2363497A
Cited
US2399035A
Cited
US2418212A
Cited
US2473374A
Cited
US2476414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |