US3532940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demagnetization control system
Assignee: Magnaflux Corp
•
Filing: 1966-12-30
•
Granted: 1970-10-06
•
Expires: 1986-12-30
Abstract
No abstract record available.
Inventors
- 👤 Kenneth W Schroeder
- 👤 Bruce G Isaacson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:32
CPC Classifications
H; H01; H01F; H01F13/00; H01F13/006; H01F29/00; H01F29/14; H01F29/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2118174A
Cited
US2632035A
Cited
US2825854A
Cited
US3078396A
Cited
US3218522A
Cited
US3368119A
Cited
US3401313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |