US1279653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnet control.
Assignee: Individual
•
Filing: 1914-11-16
•
Granted: 1918-09-24
•
Expires: 1934-11-16
Abstract
No abstract record available.
Inventors
- 👤 Allen D Cardwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:19
CPC Classifications
H; H01; H01F; H01F13/00
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) | 1921-09-23 | 1922-03-25 | 1922-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-09-23 | 1926-03-25 | 1926-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-09-23 | 1930-03-25 | 1930-09-24 | $7700.00 | Window Closed / Lapsed |