US3009727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent magnet lifting device
Assignee: Thew Shovel Co
•
Filing: 1957-11-27
•
Granted: 1961-11-21
•
Expires: 1977-11-27
Abstract
No abstract record available.
Inventors
- 👤 Jones John Ivor
- 👤 Bowman Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:13
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US992724A
Cited
US1685707A
Cited
US2020803A
Cited
US2370856A
Cited
US2417762A
Cited
US2623774A
Cited
US2613980A
Cited
US2856223A
Cited
US2954257A
Cited
US2906554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |