US700839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic clutch.
Assignee: Siemens and Halske Electric Company of America
•
Filing: 1899-09-09
•
Granted: 1902-05-27
•
Expires: 1919-09-09
Abstract
No abstract record available.
Inventors
- 👤 Frank L Sessions
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:01
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/10; H02K49/102
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1905-05-26 | 1905-11-25 | 1906-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-05-26 | 1909-11-25 | 1910-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-05-26 | 1913-11-25 | 1914-05-27 | $7700.00 | Window Closed / Lapsed |