Patent US5547017B1 successfully refreshed from Google Patents.
US2840671A
Expired / Lapsed
US
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Circuit interrupter
Assignee: Siemens Schuckertwerke AG
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Filing: 1955-08-18
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Granted: 1958-06-24
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Expires: 1975-08-18
Abstract
No abstract record available.
Inventors
- 👤 Gieffers Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:06
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/16; H01H33/168
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB134946A
Cited
US775665A
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US953021A
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US2306240A
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US2351426A
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US2571864A
Cited
US2586290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |