US2801295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-channel repeater and amplifier system
Assignee: DONALD R TRILLING
•
Filing: 1951-04-23
•
Granted: 1957-07-30
•
Expires: 1971-04-23
Abstract
No abstract record available.
Inventors
- 👤 Sabaroff Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:03
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/10; H04N7/102; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/1638
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1518495A
Cited
US1565091A
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US1688036A
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US1965720A
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US2205075A
Cited
US2151081A
Cited
US2196266A
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GB623175A
Cited
US2578836A
Cited
US2611895A
Cited
US2716733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |