US1432822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic lifting device
Assignee: HARRY A LEWIS
•
Filing: 1921-07-12
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Granted: 1922-10-24
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Expires: 1941-07-12
Abstract
No abstract record available.
Inventors
- 👤 Alan D Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:47
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/02; H01F7/0231; H01F7/0252; H01F7/0257; B; B25; B25B; B25B11/00; B25B11/002; B25B7/00; B25B9/00
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) | 1925-10-23 | 1926-04-24 | 1926-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-10-23 | 1930-04-24 | 1930-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-10-23 | 1934-04-24 | 1934-10-24 | $7700.00 | Window Closed / Lapsed |