US2680178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistor unit and method of making the same
Assignee: Cutler Hammer Inc
•
Filing: 1951-09-19
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Granted: 1954-06-01
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Expires: 1971-09-19
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Kuhn
- 👤 Jerome B Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:44
CPC Classifications
H; H01; H01C; H01C3/00; H01C3/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49101; Y10T29/4935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |