US3611206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor crystal oscillator operable at a subharmonic frequency of the crystal
Assignee: KINSEKISHA KENKYIYO KK
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Filing: 1969-08-20
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Granted: 1971-10-05
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Expires: 1989-08-20
Abstract
Abstract A transistor oscillator has a piezoelectric crystal vibrator incorporated therein for the stabilization of the oscillation frequency and for producing an oscillator which may oscillate with a subharmonic of said crystal vibrator and with a middle wave range frequency.
Inventors
- 👤 Yasutomo Miyake
- 👤 Toshio Shinada
- 👤 Kunimoto Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:29
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/36; H03B5/362
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
A transistorized piezoelectric crystal oscillator for being controlled by a piezoelectric crystal vibrator incorporated therein and producing oscillation with a subharmonic of said crystal vibrator, which comprises a transistor, a parallel tuning circuit composed of an inductance and a capacitance connected between the collector and the base of said transistor, a midway tap of said inductance being connected to the emitter of said transistor, said crystal vibrator being connected between the collector and the base of said transistor, and the tuning frequency of said parallel tuning circuit being tuned to about the fundamental frequency of said crystal vibrator divided by an integer.
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |