US2698385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency multiplication system
Assignee: GTE Sylvania Inc
•
Filing: 1948-06-04
•
Granted: 1954-12-28
•
Expires: 1968-06-04
Abstract
No abstract record available.
Inventors
- 👤 Carter Emmett Finley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:42
CPC Classifications
H; H03; H03B; H03B19/00; H03B19/06; H03B19/08; H03B19/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1519619A
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US1646438A
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US1885728A
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US2231634A
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US2422742A
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US2352455A
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US2496026A
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US2427204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |