US2843770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio noise filter assembly for dynamo electric machine
Assignee: Lear Inc
•
Filing: 1955-09-26
•
Granted: 1958-07-15
•
Expires: 1975-09-26
Abstract
No abstract record available.
Inventors
- 👤 Theodore F Knapp
- 👤 Clarence H Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:57
CPC Classifications
H; H04; H04B; H04B15/00; H04B15/02; H02; H02K; H02K11/00; H02K11/02; H02K11/026; H02K11/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US726963A
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US1894724A
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US1911128A
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US2013821A
Cited
US2032129A
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US2136609A
Cited
FR878806A
Cited
US2382857A
Cited
GB593761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |