US2968782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarized duct system
Assignee: ITE Circuit Breaker Co
•
Filing: 1956-05-11
•
Granted: 1961-01-17
•
Expires: 1976-05-11
Abstract
No abstract record available.
Inventors
- 👤 John A Herrmann
- 👤 George H Farnsworth
- 👤 Russell S Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:41
CPC Classifications
H; H01; H01R; H01R25/00; H01R25/16; H01R25/161; H01R13/00; H01R13/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1157026A
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US1835109A
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US1718529A
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US2158656A
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US2310024A
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US2626301A
Cited
US2536282A
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US2611801A
Cited
US2659874A
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US2696533A
Cited
US2725542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |