US2440691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloy metal film resistor
Assignee: CONTINENTAL CARBON Inc
•
Filing: 1945-03-07
•
Granted: 1948-05-04
•
Expires: 1965-03-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Jira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:56
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1339505A
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US1717712A
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US1765413A
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US1970084A
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US1896193A
Cited
US2021661A
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US2281843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |