US821020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic clutch.
Assignee: ARNOLD MAGNETIC CLUTCH Co
•
Filing: 1902-01-18
•
Granted: 1906-05-22
•
Expires: 1922-01-18
Abstract
No abstract record available.
Inventors
- 👤 Henry H Cutler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:00
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/12
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) | 1909-05-21 | 1909-11-20 | 1910-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-05-21 | 1913-11-20 | 1914-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-05-21 | 1917-11-20 | 1918-05-22 | $7700.00 | Window Closed / Lapsed |