Patent US3414844A successfully refreshed from Google Patents.
US3414844A
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US
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Frequency dependent wave transmission device
Assignee: General Electric Co
•
Filing: 1965-12-06
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Granted: 1968-12-03
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Expires: 1985-12-06
Abstract
No abstract record available.
Inventors
- 👤 John L Putz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:37
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/213; H01P1/201; H01P5/00; H01P5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2588831A
Cited
US2725499A
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US2773213A
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US2803777A
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US2811673A
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US2894168A
Cited
US2925565A
Cited
US3349278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |