Patent US3535200A successfully refreshed from Google Patents.
US3535200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayered mechanically oriented ferrite
Assignee: Motors Liquidation Co
•
Filing: 1967-09-18
•
Granted: 1970-10-20
•
Expires: 1987-09-18
Abstract
No abstract record available.
Inventors
- 👤 James W Bergstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:30
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/0253; H01F13/00; H01F13/003; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3126617A
Cited
US3065181A
Cited
US3359152A
Cited
US3096185A
Cited
US3337461A
Cited
US3428416A
Cited
US3424685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |