Patent US2297292A successfully refreshed from Google Patents.
Patent US835942A successfully refreshed from Google Patents.
US835942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lifting-magnet.
Assignee: Individual
•
Filing: 1905-08-30
•
Granted: 1906-11-13
•
Expires: 1925-08-30
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Eastwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:10
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/20; H01F7/206
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) | 1909-11-12 | 1910-05-14 | 1910-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-11-12 | 1914-05-14 | 1914-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-11-12 | 1918-05-14 | 1918-11-13 | $7700.00 | Window Closed / Lapsed |