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US3513472A
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US
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Impedance matching device and method of tuning same
Assignee: NEW TRONICS CORP
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Filing: 1968-06-10
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Granted: 1970-05-19
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Expires: 1988-06-10
Abstract
No abstract record available.
Inventors
- 👤 John Altmayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:37
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/06; H01Q9/14; H01Q9/145; H01Q9/30; H03; H03H; H03H7/00; H03H7/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2941204A
Cited
US3453618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |