US2998494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording and reproducing device
Assignee: Individual
•
Filing: 1957-02-25
•
Granted: 1961-08-29
•
Expires: 1977-02-25
Abstract
No abstract record available.
Inventors
- 👤 Carl T Nations
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:19
CPC Classifications
G; G06; G06K; G06K1/00; G06K1/12; G06K1/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1089835A
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FR703916A
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US2258106A
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US2468198A
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US2484298A
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US2644031A
Cited
AT180424B
Cited
US2657062A
Cited
FR1041699A
Cited
US2743317A
Cited
US2917588A
Cited
US2726288A
Cited
US2922654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |