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US2559613A
Expired / Lapsed
US
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Television distribution system
Assignee: Farnsworth Research Corp
•
Filing: 1946-03-04
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Granted: 1951-07-10
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Expires: 1966-03-04
Abstract
No abstract record available.
Inventors
- 👤 William S Halstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:54
CPC Classifications
H; H04; H04H; H04H20/00; H04H20/02; H04H20/53; H04H20/61; H04H20/63
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1733609A
Cited
US1931236A
Cited
US1918291A
Cited
US1989466A
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GB373919A
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US2028857A
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US2008280A
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US2064961A
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US1981395A
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US2155821A
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FR878002A
Cited
US2298435A
Cited
US2337184A
Cited
US2394917A
Cited
US2407417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |