Patent US2776181A successfully refreshed from Google Patents.
US2776181A
Expired / Lapsed
US
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Separable supports for recorder electrodes
Assignee: Individual
•
Filing: 1952-12-11
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Granted: 1957-01-01
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Expires: 1972-12-11
Abstract
No abstract record available.
Inventors
- 👤 Alden Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:40
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/12; H04N1/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2391765A
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US2453484A
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US2575959A
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US2572462A
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US2532271A
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US2548583A
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US2639211A
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US2537512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |