Patent US2902644A successfully refreshed from Google Patents.
US2902644A
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Transfer function analysis
Assignee: Cook Electric Co
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Filing: 1953-11-10
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Granted: 1959-09-01
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Expires: 1973-11-10
Abstract
No abstract record available.
Inventors
- 👤 Donald C Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:35
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/48; G06G7/62; G06G7/623; G05; G05B; G05B23/00; G05B23/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2006698A
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US2213099A
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US2143094A
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US2378383A
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US2443603A
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US2432214A
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US2416353A
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US2650345A
Cited
US2646545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |