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Patent US3443231A successfully refreshed from Google Patents.
US3443231A
Expired / Lapsed
US
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Impedance matching system
Assignee: Gulf General Atomic Inc
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Filing: 1966-04-27
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Granted: 1969-05-06
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Expires: 1986-04-27
Abstract
No abstract record available.
Inventors
- 👤 Jorge E Roza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:01
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/38; H03H7/01; H03H7/40; H03H7/48; H03H7/487; H03H9/00
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) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |