US2994945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for wire-wound resistor
Assignee: Sprague Electric Co
•
Filing: 1957-01-31
•
Granted: 1961-08-08
•
Expires: 1977-01-31
Abstract
No abstract record available.
Inventors
- 👤 Robert V Cahill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:37
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/14; H01C1/146; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1983267A
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US2431965A
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US2537061A
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US2483424A
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US2531321A
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US2740193A
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US2825010A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |