US2769131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor acceleration system
Assignee: Westinghouse Electric Corp
•
Filing: 1953-10-30
•
Granted: 1956-10-30
•
Expires: 1973-10-30
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Immel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:24
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1741375A
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US1885908A
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US1915137A
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US2086910A
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US2282344A
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US2418516A
Cited
US2473617A
Cited
US2650341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |