US3533022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically driven electromechanical filter with cantilevered resonator and variable q
Assignee: General Electric Co
•
Filing: 1967-08-11
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Granted: 1970-10-06
•
Expires: 1987-08-11
Abstract
No abstract record available.
Inventors
- 👤 William E Engeler
- 👤 Marvin Garfinkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:46
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/15; H03H9/17; H03H9/46; H03H9/54; H03H9/542; H03H9/02; H03H2009/02165; H03H2009/02173; H03H2009/02212
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2553491A
Cited
US2866014A
Cited
US2898477A
Cited
US3200354A
Cited
US3295064A
Cited
US3283271A
Cited
US3413573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |