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Patent US2838658A successfully refreshed from Google Patents.
US2838658A
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Automatic tuning and loading coupling network for a complex load
Assignee: Individual
•
Filing: 1954-02-23
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Granted: 1958-06-10
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Expires: 1974-02-23
Abstract
No abstract record available.
Inventors
- 👤 Vernon H Vogel
- 👤 Francis J Biltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:30
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/38; H03H7/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |