Patent US2820178A successfully refreshed from Google Patents.
US2820178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching arrangement for switchingoff the ignition protective gear on the blowing of a fuse
Assignee: US Philips Corp
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Filing: 1954-07-29
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Granted: 1958-01-14
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Expires: 1974-07-29
Abstract
No abstract record available.
Inventors
- 👤 Harms Heinz-Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:05
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04; B; B23; B23K; B23K11/00; B23K11/24; B23K11/248; H02; H02H; H02H7/00; H02H7/10; H02H7/12; H02H7/1209
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1660965A
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US1902958A
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US2431352A
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US2377506A
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US2531958A
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US2441789A
Cited
US2438742A
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US2605325A
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US2665396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |