US2876419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetostriction devices
Assignee: AT&T Inc
•
Filing: 1954-12-01
•
Granted: 1959-03-03
•
Expires: 1974-12-01
Abstract
No abstract record available.
Inventors
- 👤 Umberto F Gianola
- 👤 Jr Robert L Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:03
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/08; H03C1/10; H03H; H03H3/00; H03H3/007; H03H9/00; H03H9/22; H03K; H03K19/00; H03K19/02; H03K19/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1438987A
Cited
US1882397A
Cited
US2736824A
Cited
US2696590A
Cited
US2692344A
Cited
US2708237A
Cited
US2738467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |