US3475759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television antenna with built-in cartridge preamplifier
Assignee: Winegard Co
•
Filing: 1967-10-10
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Granted: 1969-10-28
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Expires: 1987-10-10
Abstract
No abstract record available.
Inventors
- 👤 John R Winegard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:17
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/1207; H01Q1/1228; H01Q1/22; H01Q1/26; H01Q19/00; H01Q19/28; H01Q19/30; H01Q5/00; H01Q5/40; H01Q5/48; H01Q5/49; H03; H03F; H03F3/00; H03F3/189; H03F3/19; H03F3/191
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2578973A
Cited
US2757244A
Cited
US3066266A
Cited
US3086206A
Cited
US3163864A
Cited
US3195076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |