US2460684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for demagnetizing tubing
Assignee: Republic Steel Corp
•
Filing: 1943-05-26
•
Granted: 1949-02-01
•
Expires: 1963-05-26
Abstract
No abstract record available.
Inventors
- 👤 Farrow Cecil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:56
CPC Classifications
H; H01; H01F; H01F13/00; H01F13/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US329768A
Cited
US824812A
Cited
US1548563A
Cited
US1708936A
Cited
US2246542A
Cited
US2207392A
Cited
US2306584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-01 | 1952-08-02 | 1953-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-01 | 1956-08-02 | 1957-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-01 | 1960-08-02 | 1961-02-01 | $7700.00 | Window Closed / Lapsed |