US2417446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereotelevision and television range finding
Assignee: AT&T Inc
•
Filing: 1941-08-01
•
Granted: 1947-03-18
•
Expires: 1961-08-01
Abstract
No abstract record available.
Inventors
- 👤 Reynolds Frederick William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:28
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US15040A
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US160823A
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GB190429305A
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GB191101024A
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US1148222A
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US1826299A
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US1711124A
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US2075808A
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US1876272A
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US2056216A
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FR807273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-17 | 1950-09-16 | 1951-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-17 | 1954-09-16 | 1955-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-17 | 1958-09-16 | 1959-03-18 | $7700.00 | Window Closed / Lapsed |