US3061501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of electrical resistor elements
Assignee: Servel Inc
•
Filing: 1957-01-11
•
Granted: 1962-10-30
•
Expires: 1977-01-11
Abstract
No abstract record available.
Inventors
- 👤 Emil M Dittman
- 👤 Joseph J Coleman
- 👤 Ernest F Steinhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:42
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/001; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099
Claims Analysis
Total Claims: 0
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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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |