US2944824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tone arm locking device
Assignee: Industriaktiebolaget Luxor
•
Filing: 1954-03-25
•
Granted: 1960-07-12
•
Expires: 1974-03-25
Abstract
No abstract record available.
Inventors
- 👤 Wennerbo Erik
- 👤 Hedberg Gosta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:11
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/10; G11B3/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1554621A
Cited
US1610129A
Cited
US1974070A
Cited
GB494881A
Cited
US2481270A
Cited
US2506665A
Cited
US2489146A
Cited
US2525926A
Cited
US2513555A
Cited
US2599963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |