US2940070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Malfunction detector and indicator
Assignee: Ethyl Corp
•
Filing: 1956-10-17
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Granted: 1960-06-07
•
Expires: 1976-10-17
Abstract
No abstract record available.
Inventors
- 👤 Homer E Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:24
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/76; F; F15; F15B; F15B13/00; F15B13/02; B29C2945/00; B29C2945/76; B29C2945/76003; B29C2945/76147
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) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |