US2964704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical frequency analyzer and commutator therefor
Assignee: Raytheon Co
•
Filing: 1955-02-28
•
Granted: 1960-12-13
•
Expires: 1975-02-28
Abstract
No abstract record available.
Inventors
- 👤 Shapiro Sol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:48
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/201; G; G10; G10L; G10L21/00; G10L21/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US693355A
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US996960A
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US2648822A
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US2422134A
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US2485567A
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US2492062A
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US2570858A
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US2602836A
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US2774035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |