US3524196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric actuators
Assignee: English Electric Computers Ltd
•
Filing: 1968-03-11
•
Granted: 1970-08-11
•
Expires: 1988-03-11
Abstract
No abstract record available.
Inventors
- 👤 Peter Dudley Church
- 👤 Chris Stavros Sideras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:32
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B5/5591; G11B5/5504; G11B5/58; G11B5/584; H; H02; H02N; H02N2/00; H02N2/02; H02N2/04; H02N2/043
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2513269A
Cited
US2565586A
Cited
US2924981A
Cited
US3296476A
Cited
US3289468A
Cited
US3315520A
Cited
US3377489A
Cited
US3389274A
Cited
US3366808A
Cited
US3390559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |