US3384768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric resonator
Assignee: Clevite Corp
•
Filing: 1967-09-29
•
Granted: 1968-05-21
•
Expires: 1987-09-29
Abstract
No abstract record available.
Inventors
- 👤 Shockley William
- 👤 Daniel R Curran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:18
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/15; H03H9/17; H03H9/46; H03H9/54; H03H9/56; H03H9/562
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |