Patent US2973410A successfully refreshed from Google Patents.
US2973410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressing plate of a magnetic sound record reading machine
Assignee: Individual
•
Filing: 1959-04-29
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Granted: 1961-02-28
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Expires: 1979-04-29
Abstract
No abstract record available.
Inventors
- 👤 Hoshino Yasushi
- 👤 Tamagawa-Okusawacho
- 👤 Sato Minoru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:52
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/02; G11B21/04; G11B21/043; G09; G09B; G09B5/00; G09B5/06; G09B5/062; G11B33/00; G11B33/02; G11B33/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |