US2579175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph
Assignee: WEBSTER CHICAGO CORP
•
Filing: 1950-01-13
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Granted: 1951-12-18
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Expires: 1970-01-13
Abstract
No abstract record available.
Inventors
- 👤 Colin B Dale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:19
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/08; G11B17/12; G11B17/16; G11B3/00; G11B3/02; G11B3/08
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) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |