US2959732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine analyzer employing radiofrequency oscillations
Assignee: Individual
•
Filing: 1954-10-05
•
Granted: 1960-11-08
•
Expires: 1974-10-05
Abstract
No abstract record available.
Inventors
- 👤 Jr John E Lindberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:37
CPC Classifications
F; F02; F02P; F02P17/00; F02P17/02; F02P17/04; F02P17/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2335780A
Cited
US2355363A
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US2381609A
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US2499410A
Cited
US2704807A
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US2518427A
Cited
US2787760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |