Patent US2640310A successfully refreshed from Google Patents.
US2640310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic stopping device
Assignee: Akzo Nobel UK PLC
•
Filing: 1949-12-30
•
Granted: 1953-06-02
•
Expires: 1969-12-30
Abstract
No abstract record available.
Inventors
- 👤 Ingham S Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:06
CPC Classifications
D; D01; D01H; D01H7/00; D01H7/02; D01H7/86; D01H7/862
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1907551A
Cited
US2053645A
Cited
US2148665A
Cited
US2364808A
Cited
US2400323A
Cited
US2410674A
Cited
US2487837A
Cited
US2482654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |