Patent US2496988A successfully refreshed from Google Patents.
US2496988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Megaphone, including mouth- and earpieces
Assignee: Individual
•
Filing: 1946-01-18
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Granted: 1950-02-07
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Expires: 1966-01-18
Abstract
No abstract record available.
Inventors
- 👤 Cunningham Cecil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:59
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/08
Claims Analysis
Total Claims: 0
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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) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |