Patent US3109153A successfully refreshed from Google Patents.
US3109153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable piezoelectric wave filter having two resonance peaks
Assignee: General Dynamics Corp
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Filing: 1960-11-18
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Granted: 1963-10-29
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Expires: 1980-11-18
Abstract
No abstract record available.
Inventors
- 👤 Rodek Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:37
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; H03H9/54; H03H9/58; H03H9/581; H03H9/02; H03H9/05; H03H9/0504
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN COMBINATION, A PIEZOELECTRIC UNIT INCLUDING FIRST AND SECOND RELATIVELY THIN LONGITUDINAL MEMBERS OF PIEZOELECTRIC MATERIAL HAVING A GIVEN LENGTH, MEANS MOVABLE ALONG THE LONGITUDINAL AXIS OF SAID FIRST AND SECOND MEMBERS FOR SELECTIVELY AND RIGIDLY CLAMPING SAID UNIT ALONG A LINE WHICH IS TRANSVERSE TO THE LONGITUDINAL AXIS OF SAID FIRST AND SECOND MEMBERS WHEREBY SAID LINE DIVIDES SAID UNIT INTO A FIRST PORTION ON ONE SIDE AND A SECOND PORTION ON THE OTHER SIDE OF SAID LINE, SAID FIRST PORTION HAVING A FIRST RESONANT MODE OF VIBRATION AT A FIRST GIVEN FREQUENCY
Claim 2
Dependent Claim
94 words
IN COMBINATION, A PIEZOELECTRIC UNIT INCLUDING FIRST AND SECOND RELATIVELY THIN LONGITUDINAL MEMBERS OF PIEZOELECTRIC MATERIAL HAVING A GIVEN LENGTH, MEANS MOVABLE ALONG THE LONGITUDINAL AXIS OF SAID FIRST AND SECOND MEMBERS FOR SELECTIVELY AND RIGIDLY CLAMPING SAID UNIT ALONG A LINE WHICH IS TRANSVERSE TO THE LONGITUDINAL AXIS OF SAID FIRST AND SECOND MEMBERS WHEREBY SAID LINE DIVIDES SAID UNIT INTO A FIRST PORTION ON ONE SIDE AND A SECOND PORTION ON THE OTHER SIDE OF SAID LINE, SAID FIRST PORTION HAVING A FIRST RESONANT MODE OF VIBRATION AT A FIRST GIVEN FREQUENCY
References Cited (Backward Citations)
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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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |