US2454508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistor and method of making the same
Assignee: SPEER RESISTOR Corp
•
Filing: 1940-12-13
•
Granted: 1948-11-23
•
Expires: 1960-12-13
Abstract
No abstract record available.
Inventors
- 👤 George G Herrick
- 👤 Hugh N Veley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:42
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/001; H01C17/00; H01C17/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49098
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US545578A
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US1392174A
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US1837754A
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US1994967A
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US2261916A
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US2305977A
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US2271744A
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US2269136A
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US2199803A
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US2282328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-23 | 1952-05-24 | 1952-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-23 | 1956-05-24 | 1956-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-23 | 1960-05-24 | 1960-11-23 | $7700.00 | Window Closed / Lapsed |