US2961076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Master actuating mechanism for operating cell doors and keyless locks
Assignee: Southern Steel Co
•
Filing: 1958-06-11
•
Granted: 1960-11-22
•
Expires: 1978-06-11
Abstract
No abstract record available.
Inventors
- 👤 Loyd J White
- 👤 Archie L Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:18
CPC Classifications
E; E05; E05F; E05F17/00; E05F17/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US812637A
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US1133318A
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US1611260A
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US1707648A
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US1858624A
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US2012556A
Cited
US2546685A
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US2841252A
Cited
US2837182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |