US2543497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phonograph needle
Assignee: Individual
•
Filing: 1945-09-22
•
Granted: 1951-02-27
•
Expires: 1965-09-22
Abstract
No abstract record available.
Inventors
- 👤 William H Hutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:45
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/44; G11B3/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR333416A
Cited
US881594A
Cited
US1235154A
Cited
US1281135A
Cited
US1290295A
Cited
US1490875A
Cited
US1666330A
Cited
GB393571A
Cited
US2320427A
Cited
US2320416A
Cited
US2418212A
Cited
US2455913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |