US977577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnet.
Assignee: Westinghouse Electric Corp
•
Filing: 1905-08-02
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Granted: 1910-12-06
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Expires: 1925-08-02
Abstract
No abstract record available.
Inventors
- 👤 Ragnar Wikander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:00
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/64; H01H50/643; H01H50/644
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) | 1913-12-05 | 1914-06-06 | 1914-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-12-05 | 1918-06-06 | 1918-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-12-05 | 1922-06-06 | 1922-12-06 | $7700.00 | Window Closed / Lapsed |