US2942331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistor and method of preparing same
Assignee: Frenchtown Porcelain Co
•
Filing: 1957-11-29
•
Granted: 1960-06-28
•
Expires: 1977-11-29
Abstract
No abstract record available.
Inventors
- 👤 William D Smiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:13
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/22; H01C17/26; H01C17/262; H01B; H01B1/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49099
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US540073A
Cited
US1023485A
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US1291106A
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US1693899A
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US1832466A
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US1936934A
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US2092133A
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US2440691A
Cited
US2662957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |