Patent DE1077950B successfully refreshed from Google Patents.
US3469153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for energizing and de-energizing a plurality of switching devices in a predetermined sequence
Assignee: Westinghouse Electric Corp
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Filing: 1967-04-28
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Granted: 1969-09-23
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Expires: 1987-04-28
Abstract
No abstract record available.
Inventors
- 👤 Hendrik C Appelo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:42
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3076918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |