US3372283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attenuation control device
Assignee: Ampex Corp
•
Filing: 1965-02-15
•
Granted: 1968-03-05
•
Expires: 1985-02-15
Abstract
No abstract record available.
Inventors
- 👤 Andre A Jaecklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:37
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/24; H03H7/25; H03H7/258; H01; H01F; H01F19/00; H01F19/04; H01F19/06; H01F29/00; H01F29/14; H01F29/143; H01F29/146; H01F38/00; H01F38/20; H01F38/22; H03G; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0076; H03G1/02; H03G3/00; H03G3/20; H03K; H03K17/00; H03K17/51; H03K17/80; H03K17/82; Y; Y10; Y10S; Y10S174/00; Y10S174/13; Y10S174/14; Y10S174/17; Y10S174/24; Y10S174/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2073458A
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DE966904C
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US3316358A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |