US3390337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Band changing and automatic tuning apparatus for transmitter tau-pad output filter
Assignee: JM Huber Corp
•
Filing: 1966-03-15
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Granted: 1968-06-25
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Expires: 1986-03-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Bernard J Beitman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:32
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/38; H03H7/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1998322A
Cited
US2745067A
Cited
US2824220A
Cited
US2855508A
Cited
US2981902A
Cited
US3271684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |