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US591395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic coupling
Assignee: —
•
Filing: —
•
Granted: 1897-10-12
•
Expires: 1914-10-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:27
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K5/128
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) | 1900-10-12 | 1901-04-13 | 1901-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1904-10-12 | 1905-04-13 | 1905-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1908-10-12 | 1909-04-13 | 1909-10-13 | $7700.00 | Window Closed / Lapsed |