US2933628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezo electric crystal holder
Assignee: Piezo Crystal Co
•
Filing: 1956-01-13
•
Granted: 1960-04-19
•
Expires: 1976-01-13
Abstract
No abstract record available.
Inventors
- 👤 Wallace H E Samuelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:21
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/05; H03H9/0504; H03H9/0528; H03H9/09; H03H9/10; H03H9/1007; H03H9/1014
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2471625A
Cited
US2677775A
Cited
US2676275A
Cited
US2802955A
Cited
US2705760A
Cited
US2784326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |