Patent US2888628A successfully refreshed from Google Patents.
US2888628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective apparatus and systems
Assignee: Westinghouse Electric Corp
•
Filing: 1954-07-06
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Granted: 1959-05-26
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Expires: 1974-07-06
Abstract
No abstract record available.
Inventors
- 👤 Carl A Christian
- 👤 Guy W Champney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:35
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/10; H02H7/12; H02H7/125; H02H7/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1320125A
Cited
US1863162A
Cited
US2053445A
Cited
US2209818A
Cited
US2510616A
Cited
US2561967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |