Patent US3015733A successfully refreshed from Google Patents.
US3015733A
Expired / Lapsed
US
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Bipolar switching ring
Assignee: International Business Machines Corp
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Filing: 1960-01-12
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Granted: 1962-01-02
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Expires: 1980-01-12
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Vignos
- 👤 Donald P Shoultes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:12
CPC Classifications
G; G06; G06F; G06F9/00; G06F9/06; G06F9/30; H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/082; H03K19/086; H03K19/173; H03K23/00; H03K23/002; H03K23/40; H03K23/50; H03K23/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2882423A
Cited
US2950461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |