US2926326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collector ring assembly
Assignee: Engelhard Industries Inc
•
Filing: 1957-03-05
•
Granted: 1960-02-23
•
Expires: 1977-03-05
Abstract
No abstract record available.
Inventors
- 👤 Norman E Boily
- 👤 Willard F Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:51
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1347970A
Cited
US1493859A
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US2481951A
Cited
US2471808A
Cited
US2502291A
Cited
US2547022A
Cited
US2696570A
Cited
US2669483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |