US2776376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple band tuning device
Assignee: Allen B du Mont Laboratories Inc
•
Filing: 1952-12-22
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Granted: 1957-01-01
•
Expires: 1972-12-22
Abstract
No abstract record available.
Inventors
- 👤 Matthew W Slate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:32
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/38; H03; H03J; H03J3/00; H03J3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1672367A
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US1904165A
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US2169257A
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GB464254A
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US2223061A
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US2295173A
Cited
US2443935A
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US2344689A
Cited
GB591258A
Cited
US2557969A
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 |