US2934619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic device
Assignee: GLADYS E FREUNDT
•
Filing: 1958-05-12
•
Granted: 1960-04-26
•
Expires: 1978-05-12
Abstract
No abstract record available.
Inventors
- 👤 Freundt Edmund John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:28
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US692579A
Cited
US913437A
Cited
US1174230A
Cited
US1754154A
Cited
US1901443A
Cited
US2488443A
Cited
US2610995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |