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Patent US2833996A successfully refreshed from Google Patents.
US2833996A
Expired / Lapsed
US
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Centerline rotary electrical contactor device
Assignee: Individual
•
Filing: 1954-03-30
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Granted: 1958-05-06
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Expires: 1974-03-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Whicker
- 👤 Robert W Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:34
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/64
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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |