US2438222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic sound translating system
Assignee: Lear Inc
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Filing: 1945-05-22
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Granted: 1948-03-23
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Expires: 1965-05-22
Abstract
No abstract record available.
Inventors
- 👤 William P Lear
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:47
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/46; G11B15/50; G11B23/00; G11B23/02; G11B23/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-23 | 1951-09-22 | 1952-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-23 | 1955-09-22 | 1956-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-23 | 1959-09-22 | 1960-03-23 | $7700.00 | Window Closed / Lapsed |