Patent US3034390A successfully refreshed from Google Patents.
US3034390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound reproducing device
Assignee: Individual
•
Filing: 1959-06-22
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Granted: 1962-05-15
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Expires: 1979-06-22
Abstract
No abstract record available.
Inventors
- 👤 William R Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:05
CPC Classifications
H; H04; H04R; H04R27/00; G; G09; G09F; G09F25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1915858A
Cited
US2486545A
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US2489149A
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US2542271A
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FR990405A
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US2681588A
Cited
US2770996A
Cited
US2881651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |