Patent US993561A successfully refreshed from Google Patents.
US993561A
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Apparatus for transforming electrical energy into mechanical energy.
Assignee: Westinghouse Electric Corp
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Filing: 1908-05-14
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Granted: 1911-05-30
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Expires: 1928-05-14
Abstract
No abstract record available.
Inventors
- 👤 Harold B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:35
CPC Classifications
H; H02; H02N; H02N2/00; H02N2/10; H02N2/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1914-05-29 | 1914-11-28 | 1915-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-05-29 | 1918-11-28 | 1919-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-05-29 | 1922-11-28 | 1923-05-30 | $7700.00 | Window Closed / Lapsed |