Patent US3333180A successfully refreshed from Google Patents.
US3333180A
Expired / Lapsed
US
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Nonlinear resistance circuit for tripling input signal frequency
Assignee: Individual
•
Filing: 1964-06-09
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Granted: 1967-07-25
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Expires: 1984-06-09
Abstract
No abstract record available.
Inventors
- 👤 Franklin D Neu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:14
CPC Classifications
H; H03; H03B; H03B19/00; H03B19/06; H03B19/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2544211A
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US2763832A
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US2779897A
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US2920265A
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US2988688A
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US3117287A
Cited
US3153152A
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US3200329A
Cited
US3218546A
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US3205458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |