US2415730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic cleaning device
Assignee: Hartford National Bank and Trust Co
•
Filing: 1943-02-08
•
Granted: 1947-02-11
•
Expires: 1963-02-08
Abstract
No abstract record available.
Inventors
- 👤 Davis Charles William Verity
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:36
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/28; B03C1/284
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US555546A
Cited
DE336282C
Cited
US1410660A
Cited
US1831393A
Cited
GB408711A
Cited
US2113742A
Cited
US2194825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-10 | 1950-08-12 | 1951-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-10 | 1954-08-12 | 1955-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-10 | 1958-08-12 | 1959-02-11 | $7700.00 | Window Closed / Lapsed |