Patent US2403232A successfully refreshed from Google Patents.
US2403232A
Expired / Lapsed
US
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Reverberation modulator for echo effect
Assignee: Individual
•
Filing: 1944-02-26
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Granted: 1946-07-02
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Expires: 1964-02-26
Abstract
No abstract record available.
Inventors
- 👤 Parisier Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:05
CPC Classifications
G; G10; G10K; G10K15/00; G10K15/08; G10K15/10; Y; Y10; Y10S; Y10S84/00; Y10S84/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-07-01 | 1949-12-31 | 1950-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-01 | 1953-12-31 | 1954-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-01 | 1957-12-31 | 1958-07-02 | $7700.00 | Window Closed / Lapsed |