Patent US3443255A successfully refreshed from Google Patents.
US3443255A
Expired / Lapsed
US
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Current limiting device
Assignee: Siemens AG
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Filing: 1967-04-25
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Granted: 1969-05-06
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Expires: 1987-04-25
Abstract
No abstract record available.
Inventors
- 👤 Ernst Massar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:00
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/02; H02; H02H; H02H9/00; H02H9/02; H02H9/023; H10; H10N; H10N60/00; H10N60/30; H10N60/35; H10N60/355; H01F2006/001; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S336/00; Y10S336/01; Y10S505/00; Y10S505/825; Y10S505/85; Y10S505/88
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3129359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |