US3427712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an electrical resistor
Assignee: ALBERT NORBERT ROBERT WITDOECK
•
Filing: 1964-06-25
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Granted: 1969-02-18
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Expires: 1984-06-25
Abstract
No abstract record available.
Inventors
- 👤 Albert Norbert Rober Witdoeckt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:41
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/07; H05; H05B; H05B3/00; H05B3/20; H05B3/22; H05B3/26; H05B2203/00; H05B2203/002; H05B2203/003; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA584588A
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US2622178A
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US2719213A
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US2680184A
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US3149406A
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US3162076A
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US3172074A
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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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |