US455067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro—Magnetic Motor
Assignee: Individual
•
Filing: —
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Granted: 1891-06-30
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Expires: 1908-06-30
Abstract
No abstract record available.
Inventors
- 👤 Nikola Tesla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:40
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/04; B60S1/06; B60S1/08; B60S1/0803; H; H02; H02P; H02P1/00; H02P1/16; H02P1/26
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) | 1894-06-29 | 1894-12-29 | 1895-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1898-06-29 | 1898-12-29 | 1899-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1902-06-30 | 1902-12-30 | 1903-07-01 | $7700.00 | Window Closed / Lapsed |