Patent US3300740A successfully refreshed from Google Patents.
US3300740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A. c. ripple and noise reduction without increasing current drain
Assignee: Collins Radio Co
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Filing: 1963-07-08
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Granted: 1967-01-24
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Expires: 1983-07-08
Abstract
No abstract record available.
Inventors
- 👤 William E Herzog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:09
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/14; H04; H04B; H04B15/00; H04B15/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3117292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |