US2661433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric device
Assignee: Clevite Corp
•
Filing: 1951-05-14
•
Granted: 1953-12-01
•
Expires: 1971-05-14
Abstract
No abstract record available.
Inventors
- 👤 Jaffe Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:19
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/02007; H03H9/02015
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A PIEZOELECTRIC DEVICE COMPRISING: A PIEZOELECTRICALLY SENSITIVE SECTION HAVING A PAIR OF OP-
Claim 2
Dependent Claim
13 words
A PIEZOELECTRIC DEVICE COMPRISING: A PIEZOELECTRICALLY SENSITIVE SECTION HAVING A PAIR OF OP-
References Cited (Backward Citations)
US1824777A
Cited
US2485129A
Cited
US2485130A
Cited
US2485131A
Cited
US2485132A
Cited
US2490216A
Cited
US2493144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |