US2519359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic volume control
Assignee: Unisys Corp
•
Filing: 1944-09-29
•
Granted: 1950-08-22
•
Expires: 1964-09-29
Abstract
No abstract record available.
Inventors
- 👤 Walter N Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:16
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/22; G; G01; G01S; G01S7/00; G01S7/02; G01S7/28; G01S7/285; G01S7/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2060969A
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US2222759A
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US2224134A
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US2313952A
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US2246939A
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US2240601A
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US2288434A
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US2371397A
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US2408821A
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US2416158A
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US2426182A
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US2434294A
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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) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |