US3465178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Driven-boundary piezoelectric crystals
Assignee: United States Department of the Army
•
Filing: 1966-09-13
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Granted: 1969-09-02
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Expires: 1986-09-13
Abstract
No abstract record available.
Inventors
- 👤 Don R Pardue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:32
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; H03H9/54; H03H9/545; H03H9/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3396327A
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US3243648A
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US3297968A
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US3222622A
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US3202868A
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US3307052A
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US3335299A
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US3374367A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |