Patent US3401275A successfully refreshed from Google Patents.
US3401275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite resonator
Assignee: Clevite Corp
•
Filing: 1966-04-14
•
Granted: 1968-09-10
•
Expires: 1986-04-14
Abstract
No abstract record available.
Inventors
- 👤 Daniel R Curran
- 👤 Don A Berlincourt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:52
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/15; H03H9/17; H03H9/02; H03H9/02007; H03H9/02062; H03H9/0207; H03H9/02086; H03H9/02133; H03H9/46; H03H9/54; H03H9/58
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) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |