Patent US2479806A successfully refreshed from Google Patents.
US2479806A
Expired / Lapsed
US
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Acoustical telephone connector for sound recorders
Assignee: Individual
•
Filing: 1948-07-14
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Granted: 1949-08-23
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Expires: 1968-07-14
Abstract
No abstract record available.
Inventors
- 👤 Scott B Berkeley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:39
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/21; H04M1/215; H04M1/2155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US847691A
Cited
US1103421A
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US1548028A
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US1654645A
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US1654633A
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US2160829A
Cited
US2165546A
Cited
US2278828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |