US3033955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical filter
Assignee: Philips North America LLC
•
Filing: 1959-10-15
•
Granted: 1962-05-08
•
Expires: 1979-10-15
Abstract
No abstract record available.
Inventors
- 👤 Steven M Monda
- 👤 William A Fordeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:52
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1190923A
Cited
US1400126A
Cited
US1919041A
Cited
US2163195A
Cited
GB484942A
Cited
US2565508A
Cited
US2580732A
Cited
US2950368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |