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US2561602A
Expired / Lapsed
US
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Apparatus for making aural announcements
Assignee: Individual
•
Filing: 1947-07-29
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Granted: 1951-07-24
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Expires: 1967-07-29
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Valentino
- 👤 Fine Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:35
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/02; G11B23/00; G11B23/30; G11B23/32; G11B27/00; G11B27/10; G11B27/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2282271A
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US2290570A
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US2335277A
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US2412318A
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US2369017A
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US2455922A
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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) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |