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Patent US2580071A successfully refreshed from Google Patents.
US2580071A
Expired / Lapsed
US
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Phonograph
Assignee: Individual
•
Filing: 1948-12-30
•
Granted: 1951-12-25
•
Expires: 1968-12-30
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Bunyard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:55
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US639452A
Cited
US836470A
Cited
GB191424784A
Cited
US1178840A
Cited
DE336844C
Cited
US1629971A
Cited
US2103739A
Cited
US1979067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |