Patent US2446324A successfully refreshed from Google Patents.
US2446324A
Expired / Lapsed
US
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Recording and reproducing apparatus
Assignee: Individual
•
Filing: 1943-05-26
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Granted: 1948-08-03
•
Expires: 1963-05-26
Abstract
No abstract record available.
Inventors
- 👤 Ghilini Alexander E Di
- 👤 Ghilini Elston Di
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:06
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B19/26; G11B19/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2174167A
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US2199420A
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US2273391A
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US2235301A
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US2293217A
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US2293220A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-03 | 1952-02-02 | 1952-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-03 | 1956-02-02 | 1956-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-03 | 1960-02-02 | 1960-08-03 | $7700.00 | Window Closed / Lapsed |